I noticed a similar thing with myself. I think part of my decline of inspiration came from maturing and finding out a lot more about what is possible and not po

I noticed a similar thing with myself. I think part of my decline of inspiration came from maturing and finding out a lot more about what is possible and not possible. The culmination for me was quoting my job and working on a start up full time. Which I abandoned after about 6 months. There were some really hard problems with the concept I only discovered when I hit them head on. That was my experience at least.