I hadn't gotten into the habit of brushing my cats until a few years ago. It seemed that they spent so much of their time grooming themselves and one another that they had no need of it.
Perhaps they don't, but I've learned that they love it. At first, they were afraid of the brush and so brushing them was pretty difficult. But once they realized that the cat brush wasn't going to kill them, they've come to love it.
Especially Lydia. She's one of the 24 year-olds, and Cutie's twin sister. Lydia's fur is a little longer than her sister's and she has had a problem with dry skin in the past, which is what led us on the route that resulted in feeding them better foods, but that's another story.
Anyhow, Lydia just loves being brushed. If I start brushing her while she is in her bed, she will turn over so that I can get the other side, and then stand up so that I can get the places that I couldn't get while she was lying down.
When I am brushing one of the other cats, Lydia will come over and line up, waiting for her turn, and she does that even if she had just had her turn. Now if I can find a way to get them to enjoy having their nails clipped.