I love plaster walls. However there are some challenges when drilling into them to hang shelving. Such as when you drill the screw holes 1/8" too close together and then you have to remove not only the screw but the screw anchor as well.
We now have craters in the wall.
We are patching and will be painting. But the room's occupant loves to dig in the filling material. As soon as it is dry, we find evidence of mining going on and have to refill. I am trying to fill and paint today before the miner gets home.