I think this might be the wrong way to look at Gromnir's and I's positions on the matter, though I obviously can only really speak for myself. The argument that I have previously and specifically taken issue with is the overly simplistic equating of the two parties, their leaders, and where they are going right now. It would be so easy, especially as someone who doesn't like either parties or its leader, to do that - but that's intellectually and morally (I feel) lazy to me, which is why I have argued against doing that. Whether or not that leads to somebody else wanting to vote one way or another is a different matter entirely - just the fact that they're not exactly the same does not mean anyone is obligated to vote for them, and I don't think I ever made that argument. As for personally you (or anyone else), it's whatever - at least you engaged with the process (...if I remember correctly anyways, I'm pretty sure you did).
Keep in mind that I come from a younger generation than yourself, and I have grown so incredibly weary of dummies closer to my age group who will not bother with the primaries, then complain that they utterly despise Trump and also don't like Hillary/Biden very much and why should they vote for someone they don't like or feels represents them, as if the older generations are responsible for choosing a candidate that represents those who by and large didn't and don't vote. The primary, to me, is more important than the actual general, but so many - too many - people don't see it that way. I think anybody that votes in the primary pretty much already did their job, and aren't obligated to engage further if a candidate they do not find morally reprehensible didn't emerge - not in this laughably awful first-past-the-post, two-party system anyways. People who didn't bother to vote in the primary and then complain that both choices suck should have their brains violently and gruesomely dashed against the rocks for their crimes of utter cluelessness. Fortunately for them, their shortsightedness and almost certain stupidity is not actually a capital-punishment level crime.