I can't take not having in over 12 years, is it wrong to look else where?

We have been married for 28 years. My wife had cancer of the uterus and had to have a radicle hysterectomy. This pushed her into early menopause. She gets hot flashes but not for ! I have been patient. hurts her, but she is not interested in satisfying me at all. She likes for me to oraly bring her to climax but will not reciprocate. I have seen three presidents change office since my last ual release with her. Other wise it's back to Rosie Palm! This is worse than when I was single. At least back then I COULD find a partner. I don't want to leave her. She would not be able to support herself-I'm the main wage earner.Am I wrong for thinking of joining one of those buddy clubs? I'm so frustrated. Sex is always on my mind! Masturbating and fantasy is just not working for me anymore! What should I do? I've spoken to her but all that she wants to do is CUDDLE. That's like inviting a starving person over fordinner and forcing them to just watch you eat. I need your advice