I really think that you don’t need any other camera than the ones you already have, in fact, I believe that you have already too many cameras.
Use the ones that you have and be happy, go and sin no more.If there is any way for you to be happy with what you have, please be. I have a friend whom is forever buying cameras and audio equipment, but he also buys clocks. They are fetishes of some sort for him.You can only use one at the time and as you get older your ears are absolutely not capable to enjoy the finesses of yet another stereo system.
I see pictures shot with expensive cameras and lenses which could have been taken with cheaper ones to no detriment of the outcome. In fact I see very poorly processed pictures shot by people whom ruin them (and possibly don’t ever realize they do).
It is not that I am jealous of his or yours capability to spend but is there anything that you will want to do and can’t because you don’t have the extra camera?
When I was younger I was buying clothes, for example, just for fun and because I wanted something new. These days I often question myself reasons to buy yet another jacket every time I see one that I fancy.
If you really don’t have any use for your money set up a scholarship which would award a camera to a deserving poor student whom cannot afford one.