I'm not surprised about the somewhat rude and defensive posts here in answer to rather a thought provoking, albeit a tad hectoring OP.
I guess when it all boils down, we all make choices in our lives which suit us.
Not all those choices suit everyone on the planet, or every species on the planet either.
For example, having a family pet such as a friendly old Labrador, is as expensive to 'run' in carbon as having a gas guzzling 4X4 according to the ecomonist and sustainable living expert Robert Vale who wrote the book time to eat the dog
Having children is also an expensive event in terms of carbon and waste, but I doubt OP that you'd get many people except the very few reducing the size of their families on the basis of trying to cause less of a carbon footprint.
Fwiw, I have a small family, no pet, eat local produce, don't eat beef, and have no car in order to reduce my footprint. I have a few acres planted in broadleaf trees in an unmanaged woodland to sink any carbon I use flying for business.
Yes, I understand and share somewhat the frustration you show in your OP. I also wonder where people get their sense of entitlement about using up our planet's finite resources.
I wonder what kind of planet those who are entrenched in their so called petrol head ways want for their grandkids' kids?
You won't be around to know these children you share some of your genes with, or even help them if you could..... do you think they'll be able to lock themselves away in some uber ghetto, higher and higher up the hill, and avoid climate change, mass migration of all kinds of species, ecological desertification, biodiversity collapse, and mass human unrest and refugees from climate change?
Your descendants won't be able to isolate themselves and insulate themselves from the effects of climate change you know, and they'll probably curse you for not doing something about the problems they will have to deal with.
They'll learn from their history that the writing is upon the wall now for all to see, and yet we chose to ignore it, or deny it. (And give biscuits to those who challange resource wasting behaviour.)
Well, I suppose we all have to do our best. It's not always obvious where our choices are leading us in the short term, so it might be an idea to read that rather enlightening book I've posted a link to, or any other book or scientific paper on climate change you find, if you've the inclination and/or time, to gain a more global perspective on the actual effects of your day to day choices.
I'm sure our descendants, if we have any, will thank us all for doing the right thing. They'll reap what we sow for sure.
Best wishes all.