I personally have used cannabis quite a few times, and I'm also a believer that in the UK the laws should stay the same. (In the UK, if you're caught with it, aslong as it's a small amount like a 1/4, they see it as personal use, and you get away with it) However I do think that if it was legalised, the situation would get out of hand unless the government found an efficient way to control it.
However, alot of people, like myself, use it to get to sleep. It relaxes you, and as soon as you get in bed you're asleep within seconds. Others, like people with Multiple Sclerosis, use it to relieve the pain. Many doctors have suggested that people with severely torn muscles or bad sprains use it to take away the pain and to make their life far more comfortable until it heals itself. Ofcourse, I admit, I've also used it for other reasons, but as someone already said, that is my choice and it's my life. I don't deal it, and I certainly don't push it on others.