Well I'll try......
We evolved from tiny particles of stuff.....from bugs, to fish, to things that fly, to things with arms, legs, feet. We grew brains and taught ourselves stuff and formed what we are today. And you will say that's a load of old shite.
Then you'll proceed to tell me that a man in the sky made everything in 7 days. And I'll say that's a load of shite.
I can't prove it, neither can you so we will just have to get on with it. Cheers