If you're truly underpaid for your experience and location then you should be able to get a new higher paying job easily. And if you can't easily get one well maybe you aren't underpaid.
In my experience, it's just not that good? I programmed professionally in Lisp (Racket to be specific) for a couple years and while I was initially enthusiastic about it, my enthusiasm for it diminished over time.
The heavy line noise in service of an easy to understand macro system just isn't worth it (moreover, a lot of languages have advanced macros these days without S-expressions).
Looking back, I think I was so into Lisp because I just wanted to feel superior and better than the dirty Java or Python programmers?
got contacted by a trading firm when one of the founders saw one of my Show HN posts. Was my breakthrough into the quant / hft industry and I now run my own trading firm: that one event massively changed the trajectory of my entire life.