Why do I dream once in a while?!

Why do I dream once in a while?

I'd assume I know myself better than anyone else and when I tell people I rarely dream I get the stock response that everyone does. Seriously I rarely if every dream. I can tell when I don't remember a dream I just had.
I usually just fall asleep its dark (obviously) and I wake up. When I started not dreaming often I'd wake up abruptly and think to myself what just happened and why is it light out?

4 days ago
Apparently I don't remember dreaming a lot. Its like temporary amnesia. Not even a brief recollection of an image, not a sound, not a feeling, not even the occasional deja vu i used to have. Its not like meeting a person on the street and feeling you knew their name but cant remember. Just not there never knew it.
I'm 19 going on my 3rd year of college maybe I'm stressed and don't know it.

well a majority of ppl dont have dreams every night. its not unusual. also you forget your dreams a lot. so if you do have dreams u probably forgot them. so if you do have a dream one night u will probably forget it.