I've always looked at 'marijuana addiction' as more of a symptom of bigger problems such as depression. if you're not depressed quitting weed should be no problem. If they weren't going to self medicate with weed they'd likely do it with something much worse anyway so we should stop blaming weed for people's problems.
It's definitely self medicating and as long as it doesn't disrupt your life and goals, have at it. I started consuming again recently due to depression and it has helped me immensely.
100%. Weed kept me alive when no legal drugs worked. The second something else worked, I dropped my consumption significantly without a problem. After 15 years of daily use.