I turned out from local 401 almost 2 years ago, and it has been great. Pay starts off slowly, but its well worth it. I'm 25 now and make 60k/year, have 0 college debt and can travel anywhere in the us and work out of any local.
The schooling is easy as well, its not much at all vs college. Working construction is pretty rewarding as well, its hard work but the pay is nice. A sense of accomplishment knowing you worked at certain places and helped build them, etc.
It's something I'm glad I did, don't know where I'd be without it.
Right now i work for a contractor, same one for the last 6 years, doing fire alarm system design/estimating/service. All kinds of opportunities can open up during your appreticeship and afterwards.