I'm not a full time developer but have to spend some days purely on dev work(literally programming from 9 to 6). It is extremely mentally draining,yet rewarding

I'm not a full time developer but have to spend some days purely on dev work(literally programming from 9 to 6). It is extremely mentally draining,yet rewarding.In any other field, with such a level of business value created, would result in compensation being many times higher than any developer would ever make...