I tried, I tried really hard to give it up, but I can't. Now, with small kids in the mix, the mornings are not even an option.
This is what "revenge" in "revenge bedtime procrastination" is about. That feeling that it's the only time that's actually yours, the only moment of actual autonomy in your life. Everything else is driven by others - working a job, running errands, being there with your loved ones. When it starts feeling like an unending stream of obligations, those few hours late at night are a form of defiance, showing the middle finger to the universe, reclaiming some time for yourself.