Okay, guys. To be honest, the point of incubation is to be annoying.
Seriously. It's meant to slow down the hatching process and make it more difficult and time consuming to hatch pets. If this button were added, you might as well just take the entire incubation feature back off completely.
I understand the frustrations of anyone who has little time to be on here - I have exactly the same problem. However, if hatching is the most important thing to you, you can still incubate and hatch eggs every day by spending only 1 minute or less on Res.