to bank or not to bank.

for the past few months, i have been considering whether i should try to break into investment banking. lucky for me, i have a couple friends/family who have experience in the industry. on asking them about their experiences with working in investment banking, a pattern quickly emerged: they all urged me not to do it. for this, i can think of three possible reasons for their admonishments:

1. they think i can't cut it (ie, i'm not good enough)
2. it's a really great job and they want to keep the club as exclusive as possible (by excluding me)
3. the lifestyle is really as bad as everyone says it is (no life other than work)

i'm not really sure what to think...