Most of my experiences with late nights have been due to: Watching Netflix Playing video games Drinking

I find that if I skip those things I can go to bed early enough to get 8 hours and still wake up early enough to get to work first thing in the morning. Your mileage may vary especially if you have kids

Or just if you're not somewhat privileged

Sufficiently privileged to know about the importance of sleep?

To have the time to focus on things like that

You will be more productive if you get enough sleep. If your compensation is a function of your value you can afford to sleep.