Yes, this is one of the reasons I'll never have children.
No, all you need is a cultural change-- population growth is slowing.Personally, I find these sort of issues to be red herrings. It's just not worth thinking about too much because nothing is ever going to seriously be done to reduce global population enough to make the issue relevant. You'd be talking widespread euthanasia or strict mandatory birth control or other similar totalitarian policies. Not enough countries worldwide will ever adopt them without a complete paradigm shift in geopolitics.