The original question may as well have been, "Do you live in fear of your wife?"
For what other reason would you hide purchases from your best friend, if not for the worry of whether the next strike of the frying pan is 'really' going to hurt?
Are we not men anymore?
So in answer to the question, YES I do hide my camera purchases from the wife.
I traded my wife in. I did not get much for her, but the new models are terrific. Younger, lower mileage, lower maintenance, lighter, more enjoyable ... best decision I every made. I never had a problem since for spending money on cameras, lenses ... Life is good and I am happy.
Warning!! Handling a Hasselblad can be harmful to your financial well being!
Nothing beats a great piece of glass!
I leave the digital work for the urologists and proctologists.