There is only one purpose of life: Life it self. Meaning of it is up to you.

To me there is a point to life. I think we were born to reproduce; keep the species alive.
What is the point of a dogs life? or an ants?
The purpose is to live. Period.
If you are referring to meaning. Life has the meaning you make for yourself. My life is good because I worked hard and am comfortable enough to enjoy my free time, my family and I can travel.

I think all the driving forces we need are prewired into human nature. Don't worry about finding a purpose. Follow your natural curiosity. Learn how to vet information you take in stringently. Read books. Lots of them. Don't worry about what other people think. Don't be afraid to drift a while. Play. Feel. Think. When it's time to work, give it all you've got; then give it some more. Find something you can make a positive contribution to and grow it relentlessly. Don't resist change. Never give up. Sometimes a path doesn't become visible until after you've walked it.

Nature is a strange thing that acts as though it has a mind of its own. Creatures, including Man, are made as nature and circumstance requires. Ever hear of the wide mouthed frog. In times of low rains, there offspring are no longer just wide mouth frogs, but not so wide mouth frogs with no sex organs. As water runs out and food runs out the true wide mouth frogs eat the non sex not so wide mouth frogs. Strange one for natural selection to figure out, though many believe in Gia. And the theory certainly has a lot going for it. Are you truly a individual entity or are you a single cell of something much larger?

Trillions of micro-organisms are keeping you alive, red blood cells, white, anti-bodies, thoughts might be a little more psychical then we originally thought. That is one hell of a purpose for them. On the other hand, we are made out of more nothing than something, something to do with atoms? We are born and so the purpose would be, being alive. The point reproducing? Well not if you consider how many fish and animals kill/eat their own young in an almost paradoxical way. To breathe oxygen? Well, fish again. To sustain? Well if there was purpose it would be to be biofuel (poop) for plant matter, we're an awful food source by fine for that.
I think your purpose is to be alive?
I return to my motto eat, drink, think, live. Will you have a 'good' life? Comparative to someone yes to another no... You can make your own decisions so thinking, eating/drinking is needed for sustenance and well... Live. Whatever that means to you.

no point, but a purpose maybe albeit one originally set in motion by simple chemical reactions that made self replicating molecules.

its all about genes

I'm never sure. I vacillate between: "Yes, there is a point to life," and "No, life is pointless." After a couple of martinis, I'm all in. Life has purpose. But even then it's still not as convincing as it could be.

Sounds like you need a meaning in life. Here's a question, have you tried meditation? It's not for everyone and I do it about once month for me because it doesn't really do it for me, but it does that something that gives me peace of mind.

I am here.

I am glad of this.

I make the most of every day. Sleep. Wake up. Repeat.

Ok. What purpose did Cayley Anthony have?

I still have no idea. Half the time, I feel like the only thing keeping me here at all are my two grandbabies. Kids have a way of making even the ugliest world a little more beautiful.

My driving force was fighting the worst leukemia AML-5 years of trying to live. Its scary when your life-breathing, walking, eating is all threatened. I have a daughter about your age and she has the same attitude as you. Are you in school? Do you work? Live at home? If you're not happy figure out what you can change. Enjoy living. You might enjoy it.

I suppose mine is simply to have a positive effect on as many lives as I can and to be truly missed and remembered as a good person after I'm dead and buried.

Unless I die in a freakish wood chipper accident, in which case burial won't likely be necessary.