Well, I'm a guy, and I have a cat and a dog. Well, they're actually the family pets and live in the family home, not with me personally. But adding to that, if I could afford to get one and look after it (food, cat litter, etc.) and my flat didn't have a no pets policy (I'm renting when at university), then I'd definitely get a cat. I have several friends who all love cats, and I love them too. So yeah, I don't think it's weird for a guy to own a cat. Those people you overheard are just narrow-minded fools and aren't worth listening to. Anyone who judges you based on the pet you have is an idiot. Unless said pet is something like a bear or a mountain lion. That would be weird, but only because you're then quite likely to be a super-villain...