I'm getting ready to paint a room. I was just pulling out an old cracked window stool when I noticed that the paint around the window would peel off very easily in six to eight inch strips. I probably wouldn't have noticed if I hadn't been removing the trim. Should I be pulling all of this off the wall before I paint? I've read that loose paint should be removed, but "loose" seems to be indistinct. It's not peeling, or anything, but if I slip a scraper under an edge, it glides under the paint.
Some of it is more firmly attached, though if I'm a bit more persistent it will come up, too. Am I just making more work for myself?