Killing my libedo

I've posted on here before about my dead bedroom situation, well it's now been about 5 years with no more sex than about twice a year. Even then it's just a physical relief thing or to satisfy her so she can say we had sex three months ago, what are you complaining about!

Anyway without getting in to a lot of details. I still have a high desire for sex. Not a here let's just do this then go to sleep. She on the other hand doesn't seem to really ever want it, or if she does, it's like duty sex. " Let's get this over with".

After talking, counseling, trying everything I know, or that has been suggested, I'm now considering how can I just kill my libedo. I don't want to cheat, don't want a divorce, and physically she has already killed the physical part. I still want to play with her body, we are not spring chickens so we both have a few extra pounds and a few extra wrinkles, but I still want to play. Even when I'm hard and up all I have to do is start flirting and her response instantly deflates things.

So double question: is it normal to just want to kill my desires and imagination of what could be, and how do I kill the desire?

Sorry so long!