It is your right to hold such a belief. But there are two very significant elements of that belief that must be kept in mind.
1. It is indeed your belief. Meaning that it is your matter to do as you want, without necessarily making any sense to anyone else.
2. You are here defining God as the sustainer of existence. That is a very specific role, and declaring that it exists implies nothing whatsoever about the existence or meaning of other roles that are often associated with that word.
Most significantly, it does not tell us anything whatsoever about whether belief in such a concept is at all a good thing. For all we know, your God as defined above might resent worship - if it can even have any awareness of what humans might do or pursue, that is.
Come to think of it, technically you are describing the fundamental forces of physics by the name "God". Or you might as well be, far as consequences go. Or the time-space continuum. Or several other conceivable ideas.
Do you realize that in saying so you are giving up on discussing truth as such and declaring that you prefer to use your certainty as a substitute?
That is exactly what you are saying, with another wording.
Trouble is, you have just told us to disregard what you believe in if we are to pursue truth. Therefore your claim here has been voided of any meaning... by you.
And that is a good thing, because otherwise you would have to support your claim, which would involve showing that there is some chance of being "hoodwinked into atheism" and also that atheism is somehow innacurate.
That would be problematic. But it is also unnecessary, now that you gave up on attempting to make a meaningful claim.
The only remaining problem is figuring out why a meaningless claim is worth proposing.
Actually, you probably should not make it, since it might mislead others who are not forewarned to disregard it.
Well, that is what the Qur'an says, anyway. But as you just admitted, such a line of arguing is one that you gave up on trying to justify.
I happen to think that you did well in giving up, because as arguments go this Quranic view is utterly disastrous. It is disrespectful to both atheism and theism, apparently understanding neither. It is uninformed and insulting towards atheists as people, arrongantly calling us liars. And then it lies manipulatively, claiming out of thin air that atheists "need sincerity and humility".
Given that, is it any wonder that Islaam has to resort to threats of death to keep atheists quiet?
Who are those "others" and what do you mean about those others "feeling the same"? The same as you? Or as each other?