The Illusionary Idea of the Illusionary World

The idea that the world is illusionary is rather strange, at least the way I see it.

Given Set Theory, if the world is an illusion, then if you are within the parameters of the world, you are an illusion yourself, and therefore do not exist.

What on earth does anything matter to something that doesn't exist, and what on earth does something that doesn't exist matter to anything else?

Taking an example of escaping a situation of being under threat, you would require a self, a threat, and a freewill to escape. If any one or more of the three were an illusion, or if all were an illusion, it wouldn't make any sense anymore.

For example, if the threat were illusionary, there would be no logical need to escape it, and if you and the freewill were illusionary, it wouldn't matter if the real threat hit you anyway.

Best of all: How about the existent illusionary self, using an existent illusionary freewill to escape the existent illusionary threat.

You need existence to breed an existing freewill, and then again you need something existent to run from. There's no point in running if your freewill is illusionary, there's no point in running if you were, and there's no point running if the threat was an illusion too. And the argument would break down in itself if all of them were illusions. Ha, ha.

And another thing funny, is that people bother to think about such things, all the while assuming that they have existent, non-illusionary knowledge to illuminate the existent illusionary people of the world in an existent illusionary world.

Or, they make some cheapskate, non-provable, non-disprovable, intellectually dishonest idea concerning the absolute truth of their premise, which usually has no rational grounds whatsoever.

Checkmate.