Me and DH chose not to have children partly because of overpopulation and also because we both feel the world is a not very nice place on the whole so why would you bring children into it?
We are now in our 60's and things are, obviously, getting worse but are going to get a hell of a lot worse. It makes me depressed and very worried for our nieces and nephews futures and any children they may have. I am so glad though that I don't have our own children to worry about.
I think in a lot of ways it would be better for the human race to die out as we could face a very tough and frightening future. I am not sure we can do much now to change the course of events but agree that we should be trying to tidy up as much of our mess as we can before we die out.
We do try and do our bit. We have no children, we have been vegetarian for over 30 years and are now almost vegan. We buy local food as much as we can - eggs from a neighbour, veg from a local farmer, practically no processed foods, as little plastic as possible, rarely buy clothes and then mainly from charity shops.
I don't drive so will walk or use the bus. DH does drive and often has to drive distances for work. He can't use public transport as he has to carry a lot of tools for his work.
We have flown twice in the last 15 years.
I honestly do not feel that what we do makes any difference whatsoever but at least we are doing something. Far too many people just don't seem to care.
A huge problem is overpopulation but so many people don't care about that or want to believe it. Just read some of the threads on here and see just how many posters have 3, 4, 5 or even more children.
Someone will ask "should I have baby no 3 even though we have no money, live in a tiny flat etc etc" and the majority of posters will reply "yes you should", "if you want another you should have one" etc. Dare to suggest it is not a good idea and you get shot down in flames or even downright abuse.
Supposedly people are having less children but I don't see that around me. Most of my neighbours are youngish families and the average number of children they have is 3. Some have more than that