Your local group of ‘friends’ apparently; I have different experiences. And my friends with kids (who are 50+ now) mostly regret it for the time lost. Anecdotal is anecdotal.
As deathbed regrets go, 'working more' and ‘having kids’ aren’t two I hear a lot of.
I haven’t heard any deathbed regrets while having seen quite a lot of people die with their mental faculties intact (all cancer). I am wasn’t talking deathbed regrets, more like ‘what would you do different’. Then I have heard both of these things you mention, including from myself.
Consider how much less you have to work if you don't have kids.