I don't have anything against it, think it's fine. I drink far too much to have a problem with someone smoking weed haha.
The issue I have with smoking weed and don't get me wrong I've had the odd joint, but I would never do it long term.... and this is just a personal opinion and in no way scientific, it seems to kill people's cutting edge. I don't know why or what it is, but friends of mine that are regular smokers just seem to have lost a bit of their drive, ambition, I don't want to say intelligence - I don't know, they just don't seem to get as far in life as they should.