The further left I got, the more similar they looked, since the left wing and right wing of the tiny american overton window is not far apart at all, to the point you could possibly call them different wings of the same party.

Sure, that comparison has fallen apart with American fascism entering the mainstream, and for people wedged by the anti-lgbt republicans the differences are very obvious and simple. Even for a radical leftist like myself, there is an obvious better party, but I feel like my hand is forced. I’m voting for a party that doesn’t support my views (other than some social issues) solely because the alternative is fascism, and that’s a shitty feeling.

Unfortunately, people who have no representation within the US politics, notably leftists, see that both parties have the same views on most issues they truly care about. For example, someone who wants the repeal of the patriot act will notice that both parties support it (even though there are some democrats dissenting). Someone who wants real climate protections will be disappointed to notice that the changes supported by the democrats is not going to do much, if anything at all. Granted, they don’t support the rolling back of protections. God forbid you are a socialist and see the most socialist person in congress is Sanders. Even worse if you are an anarchist and see that everyone (or at least everyone I know of) is pro big-government (especially the so called libertarians). I could go on with police reform/abolition, indigenous rights, prison reform/abolition, healthcare, military policy, Palestine, and others.