"According to one study a fifth of Japanese husbands say they are bored with intercourse, while about 15 per cent say they are simply too tired. A similar proportion of women agree that the spark has gone out of their love lives, although fewer than one in 10 blames their lover's poor performance in bed.
My husband and I know that is what has happened in our marriage - but we never talk about it."

Well, I don't think this is only is Japan folks. Practically all of my friends almost never have sex with their spouses. They have aging parents to take care of, or they have physical issues that affect their sex lives, or they just plain are bored or don't really like their spouse. I feel physical intimacy is important in a marriage, but I'm starting to feel like I'm in the minority.