I think it's naive and misguided to say 'party means they put party before people'.
The fact is, organization is effective in politics. The founding fathers didn't say 'let's not talk to each other, let's do our own thing and see what happens'; they organized.
That wasn't putting 'party before country', it was being effectively organized.
If you wanted to end slavery - form a group that opposes slavery.
Today, parties stand for things. You might like or dislike them, but decide about a party based on its agenda, not simply that it's a party.
I understand the repulsion to any sort of 'party', but it's what I said in the first sentence.
Fact is, the 'special interests' are pleny organized - not just lobbyists but all kinds of organizations, with good funding and funding think tanks to create sales pitches and media organization to spread their message. They're able to stomp all over the public if the public doesn't organize a counter movement.
If you think 'both parties are sellouts against the public interest', then it'd make sense not to vote for either one, I guess, and just throw away your vote.
But I don't think that's the case. Get informed and you might learn that there's a lot to care which party gets elected; you can also fight for more third party rights.
Voting against the incumbent regardless of the alternative is a mistake.
For one thing, most districts are locked into which party will win. For another, that's a way for TERRIBLE alternatives to get in office if they do. It doesn't solve the issue.
I think you're much better off picking which of the two main parties you think is better/less bad and supporting it for now.
In the meantime, push for reform.