-Easier birth control: Make the egg into an omelette
-Relaxed child support laws: Requires deliberate decision to incubate the egg
-Clean packaged periods: Egg = No mess!
Although, there would be stories about partners hiding fertilized eggs: Instead of unplanned parenthood we would have unconsensual parenthood
There’s probably more nuances I am missing. But do discuss it in the comments.
No thank you. The eggs would have to be enormous to develop into a human baby, and laying one of those every month would suck.
Most birds don’t lay unfertilized eggs.
Dinosaurs were pretty big too
But their newborns were tiny.