I enjoy staying up late & often do not get enough sleep for it, but no, it does not help me. I think it does the opposite....it definitely harms me.
I actually need a min of 8 hours, ideally 10, and sometimes 12 hours of sleep to feel good. I am at my best when I am well-rested, well-fed, and well-loved.
When I was a child and did not have to worry about practicalities & had someone telling me when to go to bed & waking me up, I was very creative & not really moody in a melancholy way (although temperamental still).
As an adult, I still think I function at a higher level, even creatively, when I consistently care for my physical needs in a more orderly way. It's just hard for me to create/maintain some schedule where I do that because the very idea of a schedule is

, and then I often don't stick to it because I am not in the mood & I overestimate what I can do in a time period (which then discourages me when I can't do it).
I have no trouble falling asleep when I want (and pretty much wherever), but I have trouble getting up, as a part of me just wants to spend the rest of my life in bed in a half-dream state.