Dear Will,
How does having lots of cameras stop you taking photographs? I lost count of how many I have, years ago, but I don't care, because quite a lot of them are bloody awful cameras as cameras, and I bought them for a particular article, or out of technical interest, or just because they look pretty. Some, I've never used, like the Ultra Fex Himalaya on my desk as I write this.
Many people say, 'Cameras are made to be used'. Yes, they were, once, but plenty were of limited usefulness decades ago and are even more limited now (the Ultra Fex takes 620, for example). Today, they may be just interesting curios. I must have well over 50 cameras, but it doesn´t make me particularly unhappy.
Cheers,
R.