I grew up in Pittsburgh, and I absolutely loved it there. It’s one of the cheapest and safest cities to live in, and there’s tons of stuff to do – great museums, theater, all kinds of great food. Pittsburghers are great people, too – I’ve never found a city quite as friendly and welcoming as the ‘burgh… =)
The only thing is that there aren’t a lot of jobs in Pittsburgh, so you’d definitely want to check into the employment situation before making the decision to move there…