Shazerac--
I think it is normal to have high energy days (or periods of time) and low energy days. Sometimes we go through creative periods; othertimes we are just chill and need to rest.
You are very supportive but PC is a large community. Whenever you take a break, usually there are others there to fill in. I hope you never feel like it is an obligation to be a "super supporter" (you are). I even worry that there are people at PC (not saying this is you--I don't know) who are compelled to support others in a way that may be taking up to much of their time.
So maybe focus on some other things for a while and your voice will come back? Go with the flow?