I've been more and more conscious about microplastics. I was not aware that the laundry and dishwasher pods are just plastic which then goes into the water system.
The “why worry what I can’t control” is the under-40 part, but to be honest I initially considered under-30.
But by 40 you’d more likely than not have or care about children, and then you’d be worrying more about the the world you leave for them. Since they’re always copying you, you’d be more aware that every action has consequences, and that includes cynicism (especially since, by 40, you’re more likely to accept the idea that you don’t know everything).
Maybe by then it’d be in your self-interest to make the world better even by little increments instead of wearing sarcasm like a cloak of invisibility.