Most people don't remember dreams because if you don't wake after the dream it will be actively deleted. Like scrapped by the brain. But also because of that fact, some people claim all people dream but a few actually don't. You can live without dream sleep.

My friend dreams, but very, very rarely. Doesn't matter when you wake her, she never wakes from a dream. I'm sure a sleep study would confirm this. Although she also has some funky brain waves while awake, confirmed by an EEG. So maybe that is connected.

She also has a bit of restless legs and the falling asleep myoclonus/kick of a leg or similar. It even happens when she is sleepy and not even in bed. Don't know if it is related to lack of dreams.

I don't dream as much as I used to and it feels good! Every time you woke me even if it was right after I fell asleep, I always woke from a dream. I felt like I was awake all the time for a few years with no rest.

Sleep is a weird thing.