Hi, my wife has been diagnosed with cancer about 2 years ago.. She's having treatment for almost 2 years, our sex life has been affected. I feel like something is missing..Am i thinking wrong or is it ok to feel this way?Thanks

There is nothing wrong to think that way, your feelings is yours and yours only. What is crucial is not letting your feelings dictate your actions. Stay focus on her recovery, whatever it is you have both hands to make it work ;)