You may have au underlying subconcious discontent regarding your opiate use or other aspects of your life and this is what causes the unsettled feeling when stoned. The aversion to cannabis may be the symptom not the cause. Just a theory.
I agree.
I think that a lot of people end up getting this effect from pot after years of use because they have so many more expectations and responsibilities in life.
Like when you're a teenager, you can just smoke weed and not have to worry about a thing. You can get through high school easily, and hold a part-time job easily all while being a regular smoker. Your parents most likely take care of you, so you really don't have much to worry about as far as living necessities. It is totally acceptable to get stoned all day and play video games.
But once you hit your 20's, you start to reflect on yourself and compare yourself to your friends. This may lead to your weed high "diverting" your mind to thinking about your whole life situation. You may also feel guilty from spending money on weed.
Take a break, and only smoke when your going into it with a postive mindset. When I get all of my work done and am in a good mood, my high is so much better than the times I just smoked for no reasons. I guess I am just trying to get into the "no worries" mindset of my teens or something b4 I smoke.