Anarchism is not a single static end goal to be achieved, it's a moving target that we're always chasing. Anarchists living under hierarchical systems foment anarchism by building alternative non-hierarchical systems, and implementing anarchist theory in our daily lives to try and better the material reality of ourselves and those around us. A better world is possible, and until we get there we can at least try to make things better around us.

You should talk to anarchists some time. We're (usually) nice people, and we do actually have reasons for holding the beliefs and ideals that we do. We also love infodumping about our beliefs, tactics, and opinions on theory and praxis!