Mostly money. It’s not a popular answer but doing what I do I make nearly 500% more than doing what I miss doing. I’ve got family and future to save for, and I can get to my goals faster doing this stuff. The upside is that I might be able to “retire” in a few years, which to my mind is doing what you want to do regardless of the compensation. So we will see :-) I may just join you soon.