i’m sorry, really sorry to say this, but i have too many friends whose families moved them to eY when they were teenagers, and their yiddishkeit REALY REALY suffered. so mamashtaka, yes, suffering by living a mitzva.
and if you come to eY with a teenager who’s oolai, already unstable, once s/he discovers ben yehuda/crack square – that’s it for her/him. i’m so serious. and that can also happen to one who wasn’t already unstable, but became so as a result of the move.
i also have friends who came here and it was the best thing for all involved.
i would say that this is a highly personalized issue and should be discussed by anyone considering it, with his rav muvhak, or someone who is suggested to him by his rav muvhak.