You obviously didn't grasp my post, SiL. The earth is 4.5 billion years old. It's had that long for organisms to evolve. Yes, the first life forms did not appear until about a billion years later.
But where you go wrong is that earth has just about every possible environment for life to evolve in. We can see environments unlike earth in our solar system - and there is no evidence that any life exists there (maybe on Europa and Mars - but those are speculated from conditions already known to be found on Earth).
So why didn't non-carbon lifeforms evolve when the Earth is rich in other elements? Because it can't.
Why doesn't life evolve on other planets in our solar system? Because life simply cannot exist there. Life requires certain conditions to be met. At least in this universe with these physical laws.
Making statements about life evolving without earth-like conditions, is just pure speculation and has no scientific evidence at all.