Nobody actually likes you when you're depressed. Plain and simple. We can talk all day about mental health and how important it is, but the moment you are depressed, people start to distance themselves. They see you as negative, a burden, and someone too heavy to handle.
As a guy who smokes copious amounts of weed, I think one of the most damaging things weed smokers can do for it's public perception is pretend it has zero negative effects