I just thought i would throw my two cents in. My motto is everything in "Moderation" it's easy to understand smoking every day for five years would lead to burnout, IMO anything you do consistently for that long of a period of time can lead to burnout. Smoke some weed maybe once a day for a couple days, then take a break. Also if you take a break and flush your system, it takes less to get high and the high is great.
Hard stuff leads to hard problems,and harder times keep it herbal

Just my opinion.