Punkrock, No, I wouldn’t say that. I cannot even begin to generalize what “most jewish boys” want. I can talk about what most jewish guys are looking for within different denominations.
-I would say almost all orthodox jews want to marry within their religion, but they wouldn’t even date a non-orthodox, not even me.
-Conservative, could go either way, I would say it depends on the individual.
-Reform, for probably more than half, religion does not really enter the equation at all. They are going to date whoever they think is cool, interesting, pretty, whatever, and then they’re going to marry the girl they fall in love with, and if she happens to be jewish, then he probably met her at hillel.
now, to tell you what percentage of jews fall into each denomination? i could guess, but i really don’t know. i would say—orthodox, probably 10–20% of jews, and you’ll never meet them anyway. i’m not really sure if conservative or reform is bigger, but i’m going to guess reform, and it’s probably pretty close to even. and then there are ‘cultural jews’ as augustlan pointed out, if you force them to chose a denomination, they’ll usually go with reform.
so if you can sort out all my funky math, i hope it’ll help you find the answer you’re looking for.