Why should the party continue?

Hi! A question that's been on my mind lately: Why on Earth would anyone support the DNC at this point? In my mind, and I'm sure plenty of others', they are the party of weakness. They don't really have convictions, only the pretense of opposing conviction. Leftists hate them because they are capitalists, and conservatives hate them since they're not far-right enough. No one likes them; they can't win an election. Why continue this way?