I think both Dems and Republicans suck in very different and not proportionate ways, but I am also a very big proponent of voting. Go vote! It's your duty.
I find that the thing people need to remember is that the general election is purely damage control time. For actual change, and getting candidates that don't suck, the work needs to already be done by the time the election rolls around.
Politics is marketing. Governing is the slow boring of hard boards. You only get there with dilligence, conviction, and commitment to the idea that you are planting the trees that will shade your grandchildren.
This, except that the foundations that lead to change are laid on election night. Yes the cement was mixed and the scaffolding raised, but today sets the tools we have to work with to enact that change for the next 4 (or rarely 2) years.
Right, the election is the Primary. In this case it was 2020 when I voted for Burnie. Biden won (and then handed over to Harris). That's who was chosen, and I'm okay with that.
I find OP's post functionally defeatest. It hinges on this theory that there really is only one choice every election season. You must vote Democrat - whether it's Sherrod Brown or Eric Adams - and you can never question how these officials behave during an election season.
The Dems don't have any real duty towards their voters, or even an obligation to do a particularly good job of governing. They can just point at Republicans, say "Worse! Vote for us or that's who you get", then blast people with anxiety-inducing advertisement until folks panic.
The end result of this system is one in which Dems win by maximizing anxiety, rather than improving quality of life for anyone.
There are vastly larger numbers of choices in local and legislative races. And I encourage people to work hard to more variety in local and legislative races to push your values instead of only checking in every 4 years. The primary is the key time to push for who you want as the candidate.
During the actual election though, with FPTP, it unfortunately is that reductive. You are stuck choosing who is the lesser evil or who you want to push for change. The November presidential election is like public transportation. You may not like the conditions of the train or the exact destination the bus ends up at, but you take the bus that gets you closer to your destination.