Re-using art supports

I mentioned on the gallery that I'd painted over something, therefore re- using the canvas. I'm doing this more often now, instead of storing. I'm able to do this with a canvas or a rigid support but I'm sure you could use gesso or acrylic over paper. Why do I like doing it? We'll I've realised it stops me being " precious", I haven't " wasted" anything, especially a canvas....I love the feel of painting on canvas. Also, it feels very freeing to leave the previous image there while you map out the new one. You can decide whether to leave anything to show through, that can be intriguing. If I take a photo before I start, I still have a record of what I've done. One thing I don't do now, which I used to do in the past, is to constantly  " revisit" a painting in order to improve it. That's too constricting, like redecorating around one item in a room. Far better to start anew, also knowing that I haven't "wasted" anything. If it then goes to a new home, it might be like one of the Old Masters, with an intriguing image beneath.😆  revisit