I don't like sleeping more than eight hours, unless I'm completely sleep deprived. Even then, I'll automatically wake up after about eight hours. This has been the case for as long as I can remember, including times of extremely intense mental work, like a compressed exam week at university. The exceptions was when I did manual labour on a construction site for a few weeks.

I'd get home, eat, shower, and pass out, and sleep for ten or more hours. I wanted to do some reading or watch series but I couldn't keep my eyes open.

Maybe I would've gotten used to it at some point. But the experience was unlike anything else I've gone through.