What if no religions are correct, but there still is a God?

In order for the question to have any significance there would have to be something after death. The need for religion provides use with this. The burial practices of various groups vary; but usually provide an indication for the need for "things" being necessary upon arrival. Christianity is an exception. The exception is the treatment of the bodies of an enemy. The Christian religion has heaven and the various sects express differing requirements though all agree that it is necessary if you are a "believer" you will get there and if you aren't you won't.
The better question to ask: Why we feel that religion (acceptance of a higher power) is necessary?

Who are this "we"?

My Wife and me. As I usually only speak, write or type from the Christian perspective that could include them also.

I should have known..

If you widen the definition of God far enough then anything is possible.

I should have know says more about you than it does me. I consider most in the Americas and Europe as looking at things with a Christian perspective. Christianity plays such a part in the societies that it is to be expected. I often state that Freedom of Religion should also include Freedom from Religion.

I think the thread is more interesting if I keep my definition out of it, however.

Not necessarily.
For example. Most nominal christians fail to realize that their Bible makes it clear that when you're dead, you're dead. (See Ecclesiastes 9: 5,6). Also, if there were anything beyond the consequence of death bestowed on Adam and Eve, surely Eden would have been the place to inform them.

If you contract and restrict the definition of gods to only mean those cartoon gods humans have worshiped throughout history...you do a huge disservice to logic.

If every religion ever on this planet was completely wrong about the nature of the concept "god"...that would not mean there are no gods.

Widening the concept is the way to go.

But no matter whether widened or restricted...the fact is that it appears no human knows the true nature of the REALITY of existence...and any assertion that there are gods or are no gods involved in the REALITY...are inappropriate.

Guesses are okay.

Ok. Then answering purely logically we could say that if "no religions are correct", then all the views of God(s) proposed by those religions would be eliminated, and one of the infinite possible view of God remaining would be the correct one.

How many religions exist right now? A thousand maybe (recognized ones)? So we would have eliminated a thousand out of near infinite possibilities. I'm not sure that helps things any.

Why? Everyone has the right to an opinion or view. Some will make comments, which is their way of attempting to force their opinion or view on you. They complain of people having a different view as trying to force their view upon them though. I admit I make comments about the "Christian Tea Partyers" who claim to take the Bible Literally; but in reality the take very little literally as they ignore anything in the NT which goes against the life style they desire.
If a person wants to prove a point in Christianity they should stick with the NT.

Define God

God - a supernatural and sentient creator

"God" as in the Demiurge or God as defined by the Abrahamic traditions?

http://able2know.org/topic/64673-1

Can it be just an observer or does your definition imply that it must interact?

The definition would vary considerably depending the type chosen. Monotheistic appears to be the concept that most have. I have a slight problem with the concept from the Bible. Predestination or election? Is it possible to have both or do both exist as one already? Why the blood sacrifices?
If God was only an observer than the concept of any God that interacts with life forms drops Scripture to fiction. If interaction exists and the results are known we are nothing more than a board game. We can run in circles and usually do.

Perhaps, I'm not a subscriber to the domino rally god concept but it is plausible if scripture is rendered invalid.

Reasonable explanation here:

You call that "reasonable"?