My heart totally breaks for you. You are very strong and believe it or not you will make it through this. Your husband needs to KNOW (not believe but KNOW) that you will be okay however he decides to proceed and you will - eventually.
You have so much faith. Sometimes you need to close your eyes, take a deep breath and try as hard as you can to see the biggest picture out there. Hope is not gone, no matter which route your husband takes. Maybe he has lost faith in chemotherapy. Maybe he will regain his faith in chemotherapy. Maybe he just needed to vent. All roads still lead to hope. Some people find their cure in diet, some in faith, some in medicine, some in love, some in combination and some wait for reunification at a later date. Please try to remember - there are many ways to find hope and hang onto that hope - for your sanity.
You are both in my prayers.