I took piano lessons for 8 years, I just quit a year ago but still play. It's helped me so much with guitar, like finger picking and reading music, ect. I say, stay in piano lessons because once you can play stuff on expert/advanced level, it's pretty sick and you pwn NOOBS. Like the guy said above, girls love guys who play piano or guys who play 2-3 instruments : ) .  Like, I play this song called "Rhapsody in the Blue", it's  45-50 pages long(can't remember exactly), and that will impress just about anybody.