I vape most evenings after 5pm. I have ADHD and comorbid depression and anxiety. The strains I like to vape keep me motivated and help me unwind, enjoy my evening, get things done around the house, and stretch/do yoga, or some gentle exercises before bed.
I fall asleep easily each night after weed helps me get all that done. I dream just a little, and they're often lost the minute I stand up.
When I take a break, every few weeks or over vacations, it's harder to go to sleep initially, but my dreams are a little more vivid when I do.
My most vivid dreams occurred when I was taking Prozac, which wrecked my body in every other way, so I don't associate dream intensity or recollection with overall health anymore. I'm physically and emotionally much healthier off Prozac, vaping weed most nights, than I ever was on the stuff.
Edit: Seeing some usage discussion, I go through about 1/2 an ounce every 4-6 weeks vaping with a Volcano.