I've thought about this question many times over the years. Since I first got high, the longest period I've gone without toking has been 1 month, and I've been toking for over 30 years. I used to do tolerance breaks every January just to start the year off right, but I haven't done that in like 15 years.
I really can't see me quitting for good. It's a part of my Life, part of my personality, a part of who I am. I spent years learning to do all my daily activities while high... like driving, working, playing with children,
conversing, operating heavy machinery, having sex, doing laundry, etc. Hell, I even gave CPR to my best friend when he keeled over one day WHILE I WAS BLITZED OUT OF MY MIND! It's just an integral part of my existence.
I'm never hesitant to let people know that I toke up daily. It's my way of showing people that weed is not the evil drug that it's made out to be. A good number of my friends became my friends over a bowl or a joint. I've met people out in the middle of nowhere (back country hiking used to be a favorite activity of mine) and shared a session. Weed is my 'common denominator' when I find myself in unfamiliar surroundings where I don't know anyone. It's been a wonderful ice breaker whenever I've needed it.
So, to answer the poll question... nope, never... barring some unforeseen Life changing event.