You must choose what you would believe yourself. You can take the Bible and believe it's true or you can take science. Either way you must have faith in whatever you choose. (and if I might add, it takes a lot more faith to believe you came from a monkey than to believe in a Creator)
Science SAYS they've proven evolution to be true but yet other scientist have said those "proofs" are inaccurate. Simply a theory and nothing more.
I believe in a Creator and I know that takes faith and faith alone. But you have made one point. If we are no better than the animals or the rocks and plants, then what is our purpose? For in the end everything we've worked for. Everything we've built. Everything we've done is in vain. And though we may have helped some they too will fade away along w/ our name, and riches, and glory. So what is the true meaning of life?