Being a hippie, I'm all for long hair (sadly, mine has only a year's growth at current, but it's a big change from the caesar-cut I sported for 5 or 6 years). Definitely takes more time caring for it, and all the static electricity in the air is killing me (winters are really dry here), but I'm damn determined to see it past my shoulders. Good luck with your hair experiment, and beware of anyone reccomending a pony tail... you probably wouldn't want to turn into pony-tail yuppie scum. Ugh, I hate those guys.
As far as it being popular with the ladies, I get alot more compliments about my hair now that I ever did before.