Well, nowadays philosophy is often meaningless. But I think it's a good exercise only to train our mind to think about non-conventional theories. Probably it's a lite version of 'What you can't say' http://www.paulgraham.com/say.html.

Evidently, it's a question whose answer is unreachable and, in my opinion, completely irrelevant (i really don't care if there is/isn't god, if we are a computer simulation, or if I'm a potato).

It's no worse than religion, and more likely to be true, from my perspective.

I have trouble understanding how the meaning of our existence or lack thereof is banal.