I skimmed the whole thread, most posts seemed to be bashing marijuana on the sole basis of legality in most places.
It's not necessarily illegal everywhere, and in general it's proven to be less harmful than tobacco or alchohol (Although many smoke it with tobacco.)
I advocate it's legalization, and regulation, and consider it a lesser 'drug' than the two aforementioned ones.
It's about common sense; People say about driving. Yeah, don't drive while under the influence of anything! Even cough medicine in some cases.
As for smell; Many people I know, even those who don't smoke it, enjoy the smell. It can also be eaten, and thus only smells while cooking it into something (As does everything being cooked?), or vaporized and thus not put smoke everywhere. Hash/etc. also tends to smell much less prominent than the green.
My general opinion is, arguing against a cannabis thread on a legality basis on the internet is kind of daft given it's not illegal on a world-wide basis by some Earthpolice organization and alcohol and tobacco being legal in all the places weed is illegal. I myself am not afraid to admit I smoke it regularly as it helps with some hereditary joint pain and general mood and because, hell, I enjoy it more than any 'legal' alternative. I dislike alcohol and rarely have some when socialising out and about with people who don't smoke cannabis (However I more regularly smoke and socialise in much more relaxed settings than rowdy pubs), or a beer with a meal once in a while which I'm doing even less due to alcohol giving me jaw pain if I drink it while eating. I also don't regularly smoke cigarettes; Except tobacco in joints so it's not a blunt every darn time and those rare times when drinking.
If you have a blind aversion to it "because it's bad and illegal!", do some research into it, relating it to legal drugs, both recreational and medicinal. Doesn't mean you have to go smoke it, of course, personal choice, but if you have an opinion, ensure it's based on facts!
Edit:
Also, I do like to smoke while padded. Tis relaxing and if you're too baked to move (Although I don't advocate getting THAAAT baked too often) it makes things a lot easier =P
But then again, I'm smoking a lot so most times I'm padded I'm smoking anyway or vice versa.
Oh! And alcohol makes me pee lots. So if I know I'm going to be drinking I generally HAVE to be padded, or will use the excuse of going to be drinking alcohol to get extra thickly padded because of that fact. With smoking, I more have the choice.