I'll believe that when I see a process for refining the raw materials in orbit and producing something usable out of them. As is, asteroid mining endeavors are nothing short of magical thinking.
So nothing is real or possible before you see it? Why not kill yourself now, then? After all, tomorrow may never come.
People smarter than you (or I) believe that mining asteroids is not only possible but even feasibly. That doesn't mean that it is, of course. It only means that I have no reason to give a shit what you think about asteroid mining.