You might have a "convince yourself that life is pointless" bias...

I'd expect to be having trouble with general apathy and/or depression if that were the case, and I'm not. (I do experience a fair bit of apathy, but it's the comfortable 'hey, not my problem' kind of apathy: not troublesome, actually very close to contentment.)

If there was a button to safely stop a happy, healthy, responsible mother from getting hit by a car, would you push it?

If it were convenient, sure. I wouldn't go especially far out of my way to, though, in practice.

If there were two buttons, one to make the tasty food in your house disappear, and one to make the garbage disappear, and you could only push one, which one would it be? Not do you care, but which one?

This comes under 'basic maintenance', in my book. I'd be willing to devote as much energy to pushing the 'remove garbage' button as I'd be willing to put into cleaning my house the normal way (which is, um, not actually very much), and perhaps a little more for the novelty value.

You could take your choices as evidence that some part of your brain might care. If you're going to do these things anyway, and they don't seem common-sensically-morally wrong, then why not try to care more about doing them?

Why should I value 'caring more'? I'm quite satisfied with my life as it is now.

(It might be useful to note for context that I appear to be a satisficing consequentialist by nature. 'Good enough' makes lots of sense to me, and most of the bits of the world that I seem most likely to be able to change are already good enough. The bits that aren't good enough, I do put effort into fixing, including long-term effort. But the idea of having some sort of intentional long-term effect on things mostly just makes me go o.O)