Well, after I broke my foot on my honeymoon in Hawai'i, I started smoking a lot to relieve the pain. (I built up a tolerance to the Vicodin after three days.) My tolerance to weed did increase, but if I just smoked more, it would work.
I smoked beforehand anyway just for recreation. It started to become a habit to smoke constantly all day every day. I have continued that, and lived in a warm haze of weed.
I decided to take a break because I can't afford it right now, and I consider it a luxury. Also I want to decrease my tolerance. I haven't been as productive in the small things of life, not because of laziness, but because when I smoke I care more about the big things. When I am high all the time, I am more likely to get politically active, than take out the trash.
So, I love pot, and I believe it is good, but I think it's always good to have a balance. I have a very obsessive personality, and when I get into something, that is all I do, whether it is work or a hobby.
I know some people take breaks for a couple weeks or so to decrease tolerance.
How often and how much does everyone smoke? I have been smoking about a 1/8 ounce a week which seems like a lot to me. My dealer said he smokes about an ounce a week! One day, he rolled me and my friend a nice blunt for us to share and told us it was his eighth one of the day. He also threw his wallet into a wood chipper for no reason because he was so high. That is too much! Also, I don't think you should be high when you are using dangerous machinery such as wood chippers.