villain's point of view

In fall of last year, I wrote a new draft of my first novel. It ended up being even shorter than the already too-short first and second drafts -- I hand-wrote it, so I can't be sure, but I think I dropped from 40,000 words to about 20,000. So, this story may ultimately just be the sort of thing I'll have to publish as a $2 e-book, which means it won't be my first novel, because I'd like to have some traditionally published stuff before I try to publish novellas. (I will strategize more carefully when I've actually got a publishable draft.)

Anyway, this draft has some pretty significant weaknesses, apart from being really short and handwritten. The biggest of these things is that the villain totally doesn't have any motivation.

I mean, there's a rational plot arc. I know all of the reasons that the villain does the things he does. But I haven't actually fleshed out the character. (That's a joke. It's funny because he's a skeleton. This post will be hilarious in 5 years when this story is published and famous.)

I am considering writing a draft of the story from the villain's perspective. I know it's the responsible thing to do for this story.

But it's so much work that's never going to see the light of day. And I know that's a thing people do, all the time. But it's so hard to go into writing knowing in advance that you're not going to be showing anyone the piece you're working on. (And I wouldn't be. Because the bad guy is terrible and the main character is trans and he is not going to be respectful and I don't want to actually publish a book that's packed with deliberate misgendering.)