Let's face it: poking the same pastrami over and over gets old after awhile. It takes an exceptionally horny dude to still hit it aggressively after a few years.
But for clarification, just how much tapping are you people talking about? 3-4 times a week? Once per week? Once bi-weekly? Once per month?
When I was married it was at least once each day the first year. Then it was 4-6 times per week for the next 5 years or so. Then a little less. I mean, we fucked right up until we permanently separated. But we were maybe a little more active than normal, I don't know.
My point is that expectations need to be gauged in order to determine if someone is being satisfied or not. As an extreme example of skewed expectations, if a chick still wants it twice a day at 60, the poor dude probably doesn't have a chance in hell of satisfying her.
There is also the common problem of not communicating your needs effectively with your partner. Some people, men and women, build up a ton of resentment because they never communicate. If you do not think your husband is interested in banging you in the same old position he has been bumping it in for the past 20 years, then it is just as incumbent on you as it is him to look into the problem.
Take him to Arby's and tell him that you want him to take you into the rest room to **** you.
Or blow him under the dinner table. Whatever. Men are not hard to figure out.
Obviously if there is a medical issue then you got to get that seen about and follow the doctor's orders.
Now, if it is your ***** that has gone frigid, then **** her (not literally). Get rid of her if you can. Of course, if you are worth a shit you have accumulated assets. Here you may not want to divorce. You may want to arrange for some sort of open marriage situation. That way you both can be happy and YOU remain title holder to your assets, at least until you and your lawyer can take some remedial action to hide as much as possible.
The most common sense thing to do if your wife goes cold is to get into marriage counseling. You are going to have to listen to a LOT of bullshit here about HER life long wants and needs, her trials and tribulations in discovering who she really is, and daddy issues. I have been through marriage counseling. I know what I am talking about. If is excruciatingly stupid.
So, while you are throwing literally THOUSANDS of dollars at marriage therapy, listening to her asinine, mind numbing bullshit, what are YOU going to do? Answer: take on a mistress!
Mistresses can be a tricky thing. You need someone who is not going to call up your wife at 3: am and blab. You need a mistress with something to lose. Get a woman who has a husband and kids. That way you can counter any hostility with threats to destroy her.
You could get a whore. But you have got to be careful with these professional bitches. Try to find a reputable and corporate-like pimp who you can trust. Ask around for some referrals. You have got to know that the whore is discreet and will not extort you, that she is clean, and that she can be trusted not to murder you and steal your money. There are reliable services out there if you are willing to drop some cash.
Fact is, things change over time. The best thing to try to do is to be open and communicate with your spouse. If you can make it work, that is great. If not, then **** it.