[chrisseaton]

Nobody's arguing they aren't possibly voting for something that isn't in their immediate economic interests. But we can argue about their motivations.

Someone's said that it's because one day they think they'll be rich, and suggested that this was foolish. An alternative explanation is that they're voting for it because they've considered the question very carefully and are voting for what they think is morally the right thing, even though it'll harm them. In which case it's far from foolish.

I think the offence was taken in assuming the foolish explanation instead considering the one where people were making a sacrifice to do what they think is the right thing.

We don't know unless we ask them, of course.