yay! dfw is great... lets get started on that list:
cost of living- dfw is a pretty large, if you want to live
IN the city then it will be fairly expensive (still nothing compared to 90% of other states) if you live out in suburbia (like where I live, in bedford tx, map quest it and you will see its between dallas and ft.worth) I think its pretty much the best place to live! you can get a mansion for 300k, or a nice house for ~125k. Gas is cheaper than 95% of places most of the time as well. There are lots of new neighborhoods poping up lately, so you can pretty much take your pic from having a custom house built, or buying an older one, you wont have a problem finding either.
traffic in the cities, is just like anywhere else... just dont go out during rush hour if you dont have to. If you life in suburbia, you rarely have a problem.
night life: tons and tons of stuff to do here, lots of fast cars that go out every weekend... you just have to be careful because it seems as though cops have been cracking down on it (I dont go to or take part in street racing, id rather be at a track so I dont know from experience)
crime: Its pretty safe here
I cant think of 1
major thing thats happened close to here in a very long time.
inspection: well my car passed inspection with flying colors!!!! (lol, if you need it I can help)
exhaust: my car is very loud... ive been followed by cops quite a few times, but never ever pulled over or ticketed for it... just dont be stupid.)
I definately recommend DFW, there are few places that I would rather live.
just out of curiosity, are you planning on moving?