But we've built a society in the west based around worshipping our children. Politicians can do anything if it's "for the children", no matter how draconian or insane. It's rude to ever comment on how someone else chooses to raise their children. It's considered horrible to not do everything you can to make your children happier, better, etc. Better go buy a house with a yard because your kid might want a yard, because everyone knows that kids need yards.
The really interesting question isn't whether it's okay to regret having children- it's what's going to change when society unshackles itself from this strange obsession.