There's absolutely no reason to believe that fusion power is impossible. It being very, very difficult and very, very expensive to reach a practical system is the problem.

But you're right about better alternatives. Right now that alterative is a combination of solar, wind, hydro and storage, with perhaps a bit of more exotic systems (wave power? solar towers?) in the mix.

There's no physics basis for teleportation, whereas there is a clear physics basis for fusion. The way you assess things is terribly flawed.