Why can't our Sick Sims go to the hospital?

I would love if they could patch this in. Also another thing that would be useful if you could go to the hospital and ask for plastic surgery. I know we can change sim, but this is a better way to tell stories. And no extra animations would be needed, just click on the surgery thing and there'd be a plastic surgery 1000 option. Also if a sim got sick enough and didn't take care of their sickness, they could get emergency surgery. Lastly you could ask one of the doctors there what gender of baby your sims going to have if they're pregnant. :)
Edit: Also when you have twins its so awkward how one baby just ends up in a bassinet. If anything the other one should be in a hospital crib right next to the other one. Same if your sims had triplets.