It is not defeatist to predict that the 500th attempt to walk through a solid wall probably won't be any more successful than the 499th.

Sounds like a defeatest attitude to me.

Really? It has never happened, it can't happen. The democrats are there only to serve capital, same with the republicans.

What is it I should be focusing on then?

I told you, join a communist party and organize. Read theory. Voting in a bourgeois democracy does nothing for the proletariat.