I can't. I'm not a scientist. And neither are you.
Once upon a time the same thing could be said, using your logic, of the "theory" of the world being flat - or the Earth being the center of the universe.
But you're not examining the existing evidence. You're examining the lack of existing evidence. There is a difference.
You're right, I can't disprove any of those things. Neither can you. If you're trying to make me look foolish by making me admit that I can't disprove the existence of Bigfoot, you might want to be able to do it yourself first.
You've demonstrated that we don't know everything. We're willing to admit that we don't know everything. Are you? And before you answer that, you might want to look up "hubris."
Our lives might have some purpose?
Oh, boy. Oh boy oh boy oh boy. Fine, god-boy, riddle me this.
I grew up with a woman who is affectively paraplegic. She has Multiple Sclerosis. She's a wonderful person - giving, caring, she even believes in your buddy God. I've watched her humanity wither away for my entire life. She can't even roll over in bed anymore. She's completely and totally miserable and there's nothing I can do to help her. So why doesn't your God, huh? She believes in him, yet he isn't doing anything.
And don't you dare give me that "God works in mysterious ways" crap. It's just a cop out.
Or maybe you just have to believe in God because the thought that you might be on your own, that your life is your own responsibility, is just too much for you to bear. So when you think you've found a flaw in evolutionary theory you go running back to the Bible - a book wrought with inconsistancy itself.
And your belief system is based on extreme arrogance. Look to thine own self Invest.
