Right now I can think of the buddhist "tale of the bug".
Two (human) friends died and were reborn. One in heaven, the other as a dung beetle (a type of bug) on a dung pile.
The guy in heaven tried to "help" his friend by going down to Earth and carrying his friend to the skies. But his friend refused, because the dung pile was now his home, and he didn't want to leave at any cost. Only then the guy realized that it is not heaven that makes you happy, but finding the place that you're destined for.
Well tbf you could argue that having to earn money is forced labor, and therefore a form of slavery, as well. Just that you get to choose your (ab)user.
The thing with eggs is that they would probably have to be huge. I guess that the egg would maybe have to be 10x the size of the finished baby (Idk for sure though) due to inefficiencies in the food metabolism. While for chickens, that's not a problem because the babies are small, for humans it would be difficult.
I guess people are afraid of sending E-mails and doing phone-calls for this reason.
The fear of accidentally pasting a porn-link into an email is immense. So much that I clear my copy-clipboard regularly, just to be double-sure.