Me too! But I can get the plastic liners if I wanted to forego the elbow grease.
And as far as I know, I haven't seen pressure cookers with non-stick coatings. They are safe and easy to use. But you do have to follow the directions and understand the inherent dangers of not following them. The thing won't blow up unless you purposely defeat the built in safety devices. But even with the safety devices, if you open the lid while the pot is under pressure, it could be catastrophic.
Example: you have a pressure cooker running at 15 psi. The lid has a ten inch diameter. The resultant inside force is 628 lbs. on the lid, enough to blow it out of your hands and create a hole in your ceiling. But with the pressure equalized between the outside atmosphere and the inside of the pot, there is zero force applied to the lid and it is safe to remove. So if you always make sure to follow the rules, it's perfectly safe.
Seeeeeya; Goodweed of the North