Many reasons for me.

Medical - number one. No, really. It is the only thing that gives me relief from my hacking fits, presumably asthma after a fashion. Have never gotten a settled diagnosis, though I have seen numerous specialists and had medical bills over 10K trying to find one. No other medicine helped, including all the steroid inhalers, codeine cough syrup, flonase, allergy medicines, etc ad nauseam. The worst was prednisone which actually exasperated the condition. But, weed? It knocks my choking fits out in 10-15 min and I can breathe clear for a couple of hours. Then I get high again. It's a vicious cycle.

Not to be rude, but I am flat NOT INTERESTED in suggestion for cures. I have heard it all. Even if I was to consider your idea, it would be #3,268 on my list of helpful suggestions to try. See what I mean. I often wished I had a diagnosis so I wouldn't have to hear all the street shamans and the like offer me the cure all for the choking cough that someone they know has one just like it.... Yeah right. At least if I said it was cancer or emphysema maybe they would spare me the instant diagnosis that all the conventional doctors and specialist failed to find through extensive workups. I found the next best thing to a cure and that is management through pot.

Oh sorry, am I ranting?

I also like the high of course. Definitely a paradigm shift when it comes to thinking and creativeness. Just don't want to be high as often as I need to smoke. But apparently its unavoidable.

One more worth mentioning. I believe it helps me to appreciate God's creation in a heightenly sensitive way. But at the same time, I am sometimes conflicted about reconciling parts of my use with my faith. Although it fits quite nicely with my broader philosophical outlook on life.

How's that for a book?