I occasionally help my guild with raid prog. I don’t clear the raid every week, I haven’t done that for months.
Now I feel like I have to reclear the raid every week or two or else my DPS is gimped. It’s an annoying chore I thought I was done with this late in the season 
.
Healing LFR as I write this. Maybe my use case isn’t as common, and most people who raid are still clearing all the time.