I also manage to wake up before my alarm clock with 1-30 minutes (achieved via programming), with alarm times varying from 5.30 am to 7 am depending on what needs doing that day, but it's still physically painful and mentally unpleasant. I'm basically running on autopilot until about noon. Oddly enough, if I manage to get a decent amount of sleep and wake up at something like 2 am, it's awesome, but falling asleep at 5-6 in the afternoon is slightly difficult.

I cannot remember a single instance in my whole life when I woke up in the morning and thought 'heh, fully rested and full of energy. what a wonderful morning!'. I cannot understand people able to get up earlier and do stuff like go running, before work. Hell, I shower at night to save time in the morning (and because getting into bed full of day-stuff is just icky). Going on holidays is also mildly unpleasant because hotels usually offer breakfast up to 10 am (11 in the weekend). I wish they'd offer brunch as well.

Absolutely, but most of the time humans are very very similar. For example take the whole "fast metabolism" crap, the real difference is like 100-150 kcal a day. That's one slice of toast pretty much.

If you look at the past we didn't have (much) artificial light. Humans were up during sunlight and went to bed when it got dark. With an hour or two of fucking in the middle of the night before sleeping again.

Just based on biology it makes zero sense for someone to be a pure night owl (as in being mostly awake at night). A few hours of time shift? Sure, I can see that. But our main problem is modern living, artificial lights, too much stimulation in the evening, not enough movement, ..

If you cut someone off from all artificial light I'd bet you they'd go to bed earlier on their own.