We, As a species, have no purpose. We are at the top of the food chain, and have not really had that hard time to survive. Because we as a species had no real purpose, we got bored. and started inventing purposes for individuals. Our lives weren't a constant fight for survival, that is because we invented tools to help us survive. Hammer, Spear, Etc.
Sorry, but this argument is entirely incoherent. You claim that because we invented tools to help us survive, humans do not have a purpose anymore, because they do not have to struggle to survive. Firstly, your definition of "purpose" is needed. If you mean "purpose" like "meaning of life" then I am afraid that you have made an unfalsifiable claim, because the meaning of life can not be proven or disproven; it is impossible to prove that the meaning of life was to survive before the creation of tools, and it is impossible to prove that there was no meaning of life after tools were invented.
We therefore created a world where we have invented problems, "Omagosh my hair is too long, I better get it cut."
We use a metal machine (which requires Refined Crude oil to be pumped out the ground) to get to massive rock-built structure (Built by Homo-Sapiens) where a trained individual (Taught by other Trained individuals) cuts your hair.
We invented those problems, and those solutions. I feel this is also why we complain about little things. "first world" problems if you will.
Because if we live in a perfect world, We would run out of problems, and therefore we would stop evolving all together.
So... because we, as you claim, "have invented problems", we don't have any purpose (whatever your definition of it is)? And we completely stop from evolving because there are no problems to solve (which there always are)? This does not make any sense at all. I'm inclined to suspect that the reason you posted this "theory" is because you wanted to critcise or explain why we complain about trivialities. Well, I think people complaining about trivialities is a triviality to complain about.