Dude, I agree 100% with you. I guess I'm just pessimistic because I was an early adopter for GTA 4 on PC and bliksem, did that ever annoy the heck out of me. I remember at the time I had a very strong PC and I couldn't even run the thing on Medium settings.
But, we should all try to be a little more positive

after all, it's at least coming out on PC which is great news indeed!
I was actually thinking the "no PC" stance would last and we'd rather get news on a new Red Dead Redemption game....hmmm....