I took a long break in the 10s after having been pretty much every year since the late 90s, save for when I missed out on tickets. I knew on the Saturday I needed to take some time off and wouldn't be back for a few years. So, partly I'm saying - you'll know when you're there so don't overthink it too much. When I knew that, basically I did the things that were super special for me.
I sat for a long time in a chai tea tipi, I hung out at the stone circle, I stayed up late and regretted it...
Have an absolute blast, and never say never! It's not right for you right now but who knows what your future might bring!!