Since I heard about The True Story of Fatima, it was print with fire on my heart to never be forgotten. I did regret that this event happened when I wasn't born yet, but always in my heart I would love to be like the people who witness Our Lord with so much courage and determination, instead of the people who strongly oppose to the graces of God.
In all things give thanks; for this is the will of God in Christ Jesus concerning you all.
Extinguish not the spirit. Despise not the prophecies.
But prove all things; hold fast that which is good.
From all appearance of evil refrain yourselves.
And may the God of peace himself sanctify you in all things; that your whole spirit,
and soul, and body, may be preserved blameless in the coming of our Lord Jesus Christ.

Holy Bible @ First Epistle of ST. Paul to the THESSALONIANS 5. 18 - 23

About the two kind of people described above (those who were oppose to the graces of God or witness with courage and determination) in our Holy Bible are described as cold or hot. There is the existence of a third person who is call lukewarm, this kind are does who don't want to have nothing to do with any issue.

I know thy works, thou art neither cold, nor hot. I would thou wert cold, or hot.
But because thou art lukewarm, and neither cold, nor hot,
I will begin to vomit thee out of my mouth.
Because thou sayest: I am rich, and made wealthy, and have need of nothing: and knowest not, that thou art wretched, and miserable, and poor, and blind and naked. I counsel thee to buy of me gold fire tried, that thou mayest be made rich; and mayest be clothed in white garments, and that the shame of thy nakedness may not appear; and anoint thy eyes with eyesalve, that thou mayest see.
Such I love, I rebuke and chastise.
Be zealous therefore, and do penance.

Holy Bible @ THE APOCALYPSE 3. 15 - 19

To help on discernment about of this three positions (cold, hot, or lukewarm) our Holy Mother Church teach that:
" In cases which concern private revelations, it is better to believe than not to believe, for, if you believe, and it is proven true, you will be happy that you have believed, because our Holy Mother asked it. If you believe, and it should be proven false, you will receive all blessings as if it had been true, because you believed it to be true."

(Pope Urban VIII, 1623-44)

Before anyone said a word especially concern about graces from the Holy Spirit,
(private revelations) they must know that:
He that is not with me, is against me: and he that gathereth not with me, scattereth. Therefore I say to you: Every sin and blasphemy shall be forgiven men, but the blasphemy of the Holy Spirit shall not be forgiven. And whosoever shall speak a word against the Son of man, it shall be forgiven him: but he that shall speak against the Holy Ghost, it shall not be forgiven him, neither in this world, nor in the world to come. Either make the tree good and its fruit good: or make the tree evil, and its fruit evil. For by the fruit the tree is known. O generation of vipers, how can you speak good things, whereas you are evil ? for out of the abundance of the heart the mouth speaketh. A good man out of a good treasure bringeth forth good things: and an evil man out of an evil treasure bringeth forth evil things. But I say unto you, that every idle word that men shall speak, they shall render an account for it in the day of judgment. For by thy words thou shalt be justified, and by thy words thou shalt be condemned.

Holy Bible @ ST. MATTHEW. 12. 30 - 37

Suppose that you are a mature and responsible person, and that at the eyes of many who are without experience, and they are not mature, but they trust in your experience and judgment, suppose too that you all are in a conversation about private revelations (graces of the Holy Spirit) like Fatima etc., and with many of then around you waiting on your point of view, to do base on what your answer will be, and unfortunately your answer is a strong

"I don't believe" or easiest "I don't have to believe".
Even doe that it is every and each person obligation "to prove all things" (we must search all things), some people want to save time and rather than to prove all things, they just take a shortcut and your words, they make them, their words:
" I don't believe either " or " I don't have to believe either "
but suppose too, that these not mature people shall need these graces from the Holy Spirit to be transform in order to enter into the Kingdom of God, but now because of your guidance, they do not believe in these graces of the Holy Spirit, they can not enter in the Kingdom of God in this world nor in the world to come, because God must respect the will of all people (that it is why we call God, God.) and God can't force His graces to those who are refusing His graces by saying that they don't have to believe. This it is the sin against the Holy Ghost. WOE!!!!

And He said to his disciples: It is impossible that scandals should not come: but woe to him through whom they come. It were better for him, that a millstone were hanged about his neck, and he cast into the sea, than that he should scandalize one of these little ones.

Holy Bible @ ST. LUKE. 17. 1 - 2

See that you despise not one of these little ones: for I say to you, that their angels in heaven always see the face of my Father who is in heaven.

Holy Bible @ ST. MATTHEW. 18. 10

So my recommendation about graces of The Holy Ghost, (private revelations) is that if you had not prove it all yet, or search all about it yet, and because of this you just don't know, just say that:

" I don't know "

That is more accurate and safe for your soul then to say: " I don't have to believe "

Remember that:

He that believeth and is baptized, shall be saved: but he that believeth not shall be condemned.

Holy Bible @ ST. MARK. 16. 16

Glory be to the Father, and to the Son, and to the Holy Spirit, as it was in the beginning, is now, and ever shall be, world without end. Amen