The main objection, which hasn't yet outweighed the benefits, is this:
If you have a cat in the house, you have a box of cat feces in the house.
I have no idea why this is the point that's the dealbreaker, other than that I don't like cleaning my own bathroom, so I'd probably like cleaning the cat's even less. Every other objection (vet bills, lodging when I travel, being clawed and bitten) has melted away except this one, and this one seems somehow insurmountable.
I keep thinking about it, though.
Wondering.
Imagining.
Tossing the idea around in my mind.
Should I get a cat?
Catwoman! You know a lot about cats.
I should get one, then?
Catman? You don't think I should get a cat? But I thought cats were kind of, you know, your thing?
Oh.
Hey, why are your figure's eyes blue when your eyes are green in the comic?
You've clearly never read this blog before.
Back to the matter at hand, what's wrong with a nice, quiet housecat?
Yeah. You adopt one, just like you would a child.
That... doesn't sound so much like a family.
Yes! Like a family member.
Also like a family member?
Seriously, though, as long as I provide food to the cat, the cat loves me, right?
Uh...
Wait, what?
OK.