I have lived with a number of un-altered male cats, and none of them presented any real problems, except for one who was an arrogant bastard who refused to obey "the rules" (he peed on things). He eventually moved on. The others were all fine. Perfect gentlemen. We did have one male Siamese who used to beat the shit out of any dog or cat that ventured onto our property, but he was fine with people. He died of a rare blood disease after about 6 years of wrecking havoc on various furred and feathered creatures which foolishly entered our yard. As for the female cats, yes, it is a good idea to "fix" them. No question about that.

Did our male cats father any progeny? Well, I'm sure they were eager to, but there weren't very many available females around most of the time. They'd all been "fixed". ;-)

No cat will smoke marijuana. Not upon ANY excuse. They can't be bribed or persuaded to. This proves that they are basically smarter than humans. (or more tuned in, anyway)