Life is what you make of it. Fact is, you're here, an insignificant speck on this planet, which is an insignificant speck in this galaxy, which is an insignificant speck in this universe (which, depending on who you talk to, is an insignificant speck considering all the multiverses blah blah). There's no higher power at play here. Your only inborn objective is to survive as long as possible -- not even to survive, because obviously no one makes it out alive, but to put that off as long as you're willing.
So with no higher purpose inherent to life, no "point," it logically follows that for there to be one, someone has to make it for you. And relying on other people to give you your purpose doesn't make sense, because then you're just getting their purpose for you, not your own purpose for yourself. If you can live with that, more power to you, and it's not wrong, but I suspect on some level the idea of living life as someone else's instrument isn't going to sit well.
So then the only solution left is to give yourself a purpose. Why bother? Because there's a natural aversion to death inherent in your instincts, and it take some really serious impetus to overtake that aversion and kill yourself. Far more constructive to find some way to deal with that aversion and make something of the time you're alive instead of building up the impetus to end it as quickly as you can.