Alfredo-
This is very subjective of course...But there are many areas in the USA that are really nice places to live. I live in Florida and it is great here especially if you like the oceans and beaches and the warm weather. It is 70+ degrees F for at least 10 months of the year which means you can do outdoor activities almost year round. However, there are no mountains...it is flat. Also, it is humid which makes it seem even hotter.
I just watched a show on Discovery channel and they ranked Hawaii as the safest state in the USA. Very scenic, nice weather and lots of water and mountains...but its an island state and disconnected from the mainland.
Personally, I like it out West. Colorado, Wyoming and Utah have awesome scenery, lots of activities and 4 seasons. If you are into outdoors and hiking, mountain climbing, skiing, etc. then I would suggest one of those states. California is nice also but I don't like the earthquakes and they are too liberal for my liking. <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />
Good luck to you. <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />