Personally, it's one of those things I can take or leave. If someone has some, I might take a few drags, but I wouldn't buy it myself. It's nice and all, but not a big thing in my life.
The one thing I do not agree with is the whole 'gateway drug' thing. That's like saying every teenager who nicks a can of their Dads beer is going to wind up on a bottle of vodka a day. Ridiculous.
For my money, alcohol is far more of a problem than cannabis... have you ever seen anyone pick a fight because someone looked at their pint / spilled their bird after a joint or two?

My town is awash with idiots who, on a Saturday night, just want to smack someone, anyone, because they've had a couple too many pints of Stella...
But... but... I have a friend, into his forties now, who used to be up for fun nights out with his pals and now just wants to spark up in front of his PS4, night after night after night... fine when you're a young fella (IMO) but when you're middle-aged..

Well, that's me, getting off the fence and trying to pick splinters out of my butt-cheeks...