After more than 30 years of marriage, why is he suddenly so mean about his spouse's clutter?

Dear Eric: My husband and I have been married for more than 30 years and enjoy each other's company. As with other couples, after many years there are certain things that we do that get on each other's nerves. He has always been a neat and organized person, and I have always been a bit messy. My closet is usually messy, and I forget to put things in their place, so he usually reminds me. I am autistic (functional), have ADD and, at this point of my life, menopause. This is not an excuse but a reason things are difficult for me to remember.