Thunderbelly, you say you are too thick for your wife? I suspect something else here.
My wife gave me that same complaint, too, but she knew I was into something, making it bigger, and she worried that she would be the second choice, so it was natural to complain at first, hoping that I would stop and she would be first choice, again.
Well that wasn't the case, anyway. So I explained a few things to her that would relate to OUR relationship and ease her worries that my exercising was replacement therapy. It was a desire to be all that I could be, and while I was mainly after more staying power, stronger erections, and more orgasms, it seemed that my penis was getting perhaps a little larger at the same time.
I told her that I have feelings, too, and I don't ever want to think that I could not give her all she required, at any time she needs it, in any position, for as often as she wanted it. I also have my pride, and want to know, personally, that I will always be the best that she could ever know, in every way possible, sex included.
I also told her that 50% of our male population in this country will get prostate disease by the time they are 60, and about 50% of those go on to get prostate cancer by the time they are 70. The rule is this: "Use it or lose it." Too many people in their 40's and 50's only have sex a couple times a month, and some don't have sex at all. They are jsut asking for it.
So I am strengthening my organs and putting a load on them to grow. As long as they are growing, they are not atrophying, they are not getting weak and vulnerable, and I am wanting more sex. As long as that's happening, I am not going to be getting cancer, unless I decide to do something stupid, by buying hormones and steroids, and trying to artificially and temporarily juice myself up.