It's always hard to make these decisions, but one comment deserves clarification. "a CS degree could perhaps give me even better experience than other 2 years

It's always hard to make these decisions, but one comment deserves clarification. "a CS degree could perhaps give me even better experience than other 2 years of "burned out" industry." To me that doesn't resonate (it seems 'untrue'), unless you do it very specifically. I think you should consider going back to get a degree because you have the capital, want to take a time out, and it sounds enjoyable to learn something. I would NOT go back to get a degree and stay in this field. If I did consider it, it would HAVE TO BE A TOP TEN PROGRAM (which doesn't really leave much options in Europe).... AND IT WOULD HAVE TO BE SPECIALIZED...Learning AI or ML for example. There are way too many CS grads that can't get jobs and many developers with 5+ years experience (no degree) that would get very limited increase in economics due to completing a degree.