There are so many of us who take breaks from the herb only to get back on it once we're feeling better. I am listing all of the benefits that I have personally noticed since I have quit. My stats are: smoked off and on for 21 years (started at age 12), chronic for the last 5. I have not smoked in 31 days, and with the support of this forum I hope to never go back to abusing the stuff.
Here are the benefits I have experienced. I invite you to add your own, or do your own inventory at home to keep you on track. (Yes, I am aware that there is some overlap between different benefits I am listing.)
Clear thinking; breathe better; smoother mood transitions; sharper mental dexterity; more articulate; better memory; working through stress more effectively; increased energy levels; reduced depression (after the first few weeks off); deeper interactions with others; no "bottomless pit" munching out; boosted confidence; no social anxiety; better focus on task at hand; enjoying simple pleasures more deeply; clear lungs; no concern about hiding something from my son; less stress; increased faith in my ability to control myself; no risk of arrest or legal troubles; increased joy; renewed self-respect; more free time; need to sleep less; more free cash; confidence to try new things; increased humility: asking others for help; better partnership with my girlfriend; better ability to learn and remember new songs (I'm a musician); can travel without paranoia of border checks; safer driving; ho hassles of finding good weed; no need to associate with shady dealers; not supporting organized crime; true bonds with friends rather than co-dependent drug abuse ties; better fitness level; reduced consumption of resources (ex. hydro power to grow the weed, chemical sprays and fertilizers, lighters/matches, rolling papers); new doors opening to spirit world (somewhere I only used to get to via cannabis); increased self-confidence to be "alternative" in ways other than drug use; confidence to take on any task I set my mind to; ability to strike up conversation with anyone I choose without fear or insecurity; no paranoia; increased motivation for self-improvement; feeling of wholeness that is not reliant on an external source.
That's over 40 benefits that I have encountered. I'd love to hear yours. I know that people who are struggling through the early days of withdrawal can use all the encouragement they can get, so please keep them coming!
I'd also be happy to debate or discuss any of the aforementioned benefits if you have had a different experience quitting cannabis.
Edit: Go straight to the massive list here: