Is it normal i keep my husband in a chastity cage

About 3 years ago I got interested in chastity. It started because our sex life was dead, I was fed up of whenever we had sex it would start well enough, but just as I was starting to feel relaxed enough to fully enjoy the experience and the pleasure of an orgasm, he would be in an out like a quick trip to the corner shop for some milk. So I was always left feeling less than satisfied so became less and less interested in having sex. I tried to talk to him about all this but it never changed. Lack of sex led to resentment on his part, but as I blamed him for my lack of interest we would just end up arguing. I knew something needed to be done so started looking on line for solutions, that’s when I first discovered male chastity. I thought this might be the answer as I could lock him up and get him to make a fuss of me and satisfy me in other ways before unlocking him to make love.
He was totally against it, but eventually agreed to experiment because I told him I would be happy to have sex once or twice a week. We invested in a cage and I kept to my word and things began to improve in our sex life. I locked the cage with an old padlock and kept the key in my purse. One Friday night I had snapped the lock shut and he gave me about 3 beautiful orgasms. I then reached for my handbag to get my purse out to get the key. I realised the purse was not there. After thinking back I realised I had left it in my desk drawer at work. There was no chance to retrieve it until Monday morning. Poor old hubby had to stay locked until after work on Monday. I decided we should make the best of it and he should be my locked up slave for the weekend giving me heaps of orgasms and treating me to massages and foot rubs etc. In return he would get sex all week. We had an amazing loved up weekend and I realised this was what we had been missing. I approached him a few days later that I wanted to experiment with this and have him locked up for a few days at a time. He was very reluctant but as I pointed out he had done it once and survived and we had had a great weekend and he got loads of sex all that week. He eventually agreed. Over time I pushed him to wearing his cage full time, with relief weekly if he kept me satisfied all week. This took a lot of determination on my part but I pushed him into it and eventually he agreed. Over time I would find reasons not to let him out some weekends, I was loving my new power and we now have an assortment of sex toys he uses on me. These days I only let him out about once a month but I want to push him longer and longer. He never complains any more as he knows I will add another week whenever he does. He is a wonderful man and these days does most of the housework and anything else I ask. We never argue and I feel we have a wonderful marriage but am I being mean?