Only to wealthy privileged people who can discuss their first-world problems on forums like this. As folks get poorer on the scale the more a car becomes an unavoidable necessity for many.
I applaud to your personal choices and sacrifices, but please don't make it sound like everybody can and should make the same/similar ones.
Most of us here have/want kids. I say something very opposite to what you say - folks here, please have kids! Not many, but take your time and raise them properly. It basically means sacrificing large portion of your life to them, without a guarantee they will even appreciate it. Which is fine, that shouldn't be the motivation for it anyway.
You who are reading this, are a part of smart elite in this world, whenever you are, and can raise next generation of elite with disproportionally large amount of decisive powers in their hands.
Why, you may ask? Raise them well so they are balanced happy individual with clear drive to help make this world a better place, and they may very well become next leaders, business captains, politicians, or just good citizens helping those around them, environment, mankind.
Now imagine what kind of world would that kind of attitude bring. Don't just minimize your 'bad' footprint on this existence, try creating more of the positive one.