Or for people who work 6 am shifts multiple times per week, and start work at 9 am the rest of the time. I could conceivably stay up til 2 am partying if I stayed up til 2 am every night and didn't have to get up until 10 every morning, but the real problem is that I can't get up at 5 am on a Friday morning and be able to stay up late on a Friday night. I could conceivably change this by working fewer opening shifts and more evening shifts, but I like getting up early and then having my evenings at home.
An exercise:
Name something that you do not do but should/wish you did/are told you ought, or that you do less than is normally recommended. (For instance, "exercise" or "eat vegetables".)
Make an exhaustive list of your sufficient conditions for avoiding this thing. (If you suspect that your list may be non-exhaustive, mention that in your comment.)
Precommit that: If someone comes up with a way to do the thing which doesn't have any of your listed problems, you will at least try it. It counts if you come up with this response yourself upon making your list.
(Based on: Is That Your True Rejection?)
Edit to add: Kindly stick to the spirit of the exercise; if you have no advice in line with the exercise, this is not the place to offer it. Do not drift into confrontational or abusive demands that people adjust their restrictions to suit your cached suggestion, and do not offer unsolicited other-optimizing.
To alleviate crowding, Armok_GoB has created a second thread for this challenge.