re: Booty calls are becoming rare...for the older, married crowd here

I've only been alive one year longer than you've been married, but to me it isn't too difficult to imagine that in a marriage spanning nearly three decades there will be sexual ups and downs.

I'd say to speak honestly to your spouse about it and fix it. I would bet that it won't be unwelcome news for her to hear you say that after 28 years she's still got it, and you want what she's got more often. As long as you phrase it properly...