Democrats could nominate hitler reincarnated but you people would people would be defending them because republicans would have hitler reincarnated but who also hates animals. "Other guy worse" as a defense only means things continue getting worse because there will always be something worse. When can things actually get better for a change?
Voting isn't an avenue for that kind of change. There are other avenues for more real change, but they require a lot more work and in some cases personal risk.
That doesn't mean voting isn't important, but it is a tool that's very limited in the breadth of what it can do. Atleast in the US.