I never bought into the whole "I must go to NY to prove myself" crap they all spewed to him in S5 anyway. I've seen artists be "successful" in very small towns and I think Justin needs his family and friends to inspire him. He also needs Brian and Brian isn't in NY. I know a lot of people think Justin doesn't need anyone but himself, probably Brian included, but that's really bullshit.
me either, i never really bought the "you have to go to NY to be successful" shit. anybody can be successful anywhere as long as they put their mind to it and we all know what a determined little shit justin is. justin's art(the comic book)was very successful without him going to NY, so he can do it, that's why i can't see them living there permanently. they can commute, yes. just like they can live in WV and commute to pitts. i don't think brian detests pittsburgh as much as he lets everyone think, if he did, he would've left, no questions, no hesitation. brian also likes being known as "top dog"(even though he's with justin)too much, he wouldn't leave pittsburgh altogether and give it up.
you're also right that a lot of justin's inspiration is in pittsburgh. he has a home and memories(both good and bad)there, brian is a huge source of inspiration for him(i hate when people say he isn't. hello, brian is the one that helped him draw again), so, i can't see him being away from brian that long. they're both huge sources of inspirations for each other, so wherever one is, so is the other. that's it.