I think nostalgia is rather too inadequate of a word to describe GTA IV. I cherish every single minute I played for this game. I still clearly remembered getting my old Xbox 360 Elite during Summer Break with GTA IV bundled with it. I still remember that first playthrough and seeing a fully realized open world was just mind blowing.
I kinda forgot Osho was recently banned. Honestly, I used to like the guy, because he was a fan of Vice City. But when everything turned 180 when unfairly consistently bashing V thoroughly to just low key trashing IV in almost every single post since he started modding V. In all honesty, he got it coming though. BTW I'll stop now, enough about Osho, he's history, and hopefully discussions will be more peaceful now.