Private sector pay is much better and working conditions are also on average much better. You have professional management and HR functions and one manager can’t destroy your career. More importantly the exit options are better. The relative power imbalances lead to people being treated differently.

Those are advantages, there also are disadvantages. That doesn't explain why it's obvious (nor address the HN bias/groupthink).

I was responding purely to your point about working conditions. Obviously if you come from money, have a partner who does, come from a country that’s substantially poorer than most of the first world or want to do science more than you want to have a non long distance relationship or make a professional class income doing a PhD/postdoc looks great.

For all the sarcasm, there is more to it and many people choose and and have chosen it. My point it, just because you see it that way doesn't make it "obvious"; it's just your point of view.