I didn't move out of my home state, but I moved 400 miles away from my home town.
My drawbacks are I miss my friends and the family I have left (after my parents died I left).
My pro's are we bought a nice house, it's a nice change, it's a different atmosphere, many more places to visit and get out too, higher pay rate, and the big one...my bf lived here, lol.
We were in a long distance relationship. We discussed him moving to my home town, but I decided to be the one to pack everything up, leave everything/everyone I am comfortable with and move.
I guess for me I decided to leave my hometown because I felt "stuck" there. I had a good job, but not my dream job, I always said I was going to go back to school, but never did, I had the same routine with the same places I went.
I am totally happy with my choice, and would do it all over again.
Oh I wanted to share because my SO made a good point. My biggest complaint when I moved was how hot it was in So cal compared to my home town in Nor cal. he told me after a year I would be used to it...and I swear I thought it was never going to happen....I did get used to it!