Valid question. Why would a person put themselves through constant rejection, coupled with unstable work? This seems to be against all logic. Clearly someone who would go after such a profession must be somehow...off. You've heard all the typical assumptions. Maybe this person didn't get enough love in their childhood. Maybe this person has a need for attention. Maybe this person is simply crazy. Maybe it's all of the above.
Those reasons are probably true for some actors. In my opinion it's not the reason for most. After all, if you didn't get enough love in your childhood, why would you willingly put yourself through rounds of rejection in your adulthood? That doesn't really add up.
So why does someone become an actor?
To this question I simply replied..."passion." I'm passionate about life, and acting helps me figure life out. It helps me understand people, relationships, humanity. When I take on another person’s circumstances, situations, choices, I can't help but come at my own life with a new perspective. I can't help but understand those around me on a higher level. Simply put, acting helps me to be a better person, not a perfect person, but one who's vigorously striving to figure it all out. To me, that's a life worth living.