With a 15k investment.... Let's put it this way - I wouldn't allow myself to get bored. Period.
I hear what you're saying though. I've had exotic fish (only really bad part about that was cleaning day) and I've babysat a friend's snakes before. I guess I'm just looking at it as more of a.... I'm 27 and want a business so that I can do something productive with my life, I love animals, snakes are awesome and worth money, why not combine the two and do something that I love rather than sit in a cubicle for the next 40 years?