Same thing happened to me. I was rejecting the herb for a good couple of years back in the day, in which time I considered weed to be the root cause of many problems in my life, but I now realize the herb wasn't doing much to help or hurt my situation. During this time, I became very interested in the mind expanding properties of LSD and Mdma, while viewing weed as a burden with which to slowly dispel of.
I look back at my usage of acid (horrible for the heart, and for the spine), and Mdma (undecided about what if anything bad this one did to me, but it clearly has risks), as complete and utter nonsense - especially the fucking acid, it isn't made right these days, and it eats away at the nervous system permanently. That acid is the one thing that did absolutely nothing positive for me whatsoever, and also that did the most amount of damage to my body. I noticed that it was causing to some extent a permanent degree of vasoconstriction in my body, so I stopped using the awful, disgusting shit that I would recommend nobody in their right mind ever touch, because it might permanently stress your heart out a little bit like it did to me.
Mushrooms and pot had opened so many doors for me, and after reading the likes of Richard Alpert and Timothy Leary, I thought that the chemicals held promise as well. But they don't. All of these chemical drugs are just crap for the body in my opinion. If you want to fuck your brain, heart, and liver for life, then go ahead and listen to these complete nut bars like I did and wreck your body with chemicals made in dirty street labs. For the past couple years of my life, I have only used mushrooms, on occasion, and cannabis all day. I am still recovering, slowly but surely, although it is amazing to experience just how much damage this garbage like acid and Mdma can do, even with very limited use, while I have smoked cannabis steadily for nearly a decade, and the only side effect I can attribute to this is a pretty intense addiction, that is helping me to develop a greater degree of self control, that I can bring to the plate in other areas of life than drug habits.
It's definitely great to be back on the herb, and using absolutely nothing else. I enjoy this way of life, and see herb in a different light than other more dangerous drugs. It is easy to get carried away with hard chemical drugs, but when you take a step back and look at it, they are just insane bodily stress responses that are simply not going to do any good for you. If you think otherwise, you should smoke a joint and seriously reflect on that. I'd like to take a step back and see what life would be like without weed, as my interest in taking drugs has lessened enough at this point, but I just can't seem to put this nice bong down and stop bellowing great big lungfuls of kush and hash. I'm certainly quite hooked on this pleasurable, and mind expanding material.