Luna
Death Scythe
Eh...? First off, no. Eating sweets needs sweets to be produced. Obviously that needs sugar. Mass producing sugar is, like any other mass produced agriculture bad for the ecosystem.Your personal survival, sure. But as far as I'm aware people eating sweets isn't likely to render the planet uninhabitable like a lot of the crap we're collectively doing as a species
But that wasn't my point when I wrote that yesterday. The point being, if people can't even manage that much for their own health, effects of which the first show up in a matter of weeks, with even a serious lot of people actually actively suffering from diseases still not being able to bid goodbye to these devilish charms; you really expect them to do something even more complicated than stop eating sweets? Of course they don't care much about decendants, as you put it. That majority can't even care about their own pretty immediate future right this moment.
I'd much rather flip it round. Give them a long life when they've proven to deserve it.