I have a friend who had a 1965 Porsche 912 that he spent years restoring. When he was done he spent another year in constant terror that it would be stolen. He sold it because he couldn’t take the stress. One of the unfortunate downsides of having nice cars.
A friend had a Cayenne and he had the same issue. I think he finally sold it.
I recently helped deliver a Porsche 718 (by driving it, not hauling) almost 1100 miles to the new owner. It does what it is designed to do, and very well. But I couldn’t enjoy it much. Too high tech. If I can’t fix it, I really don’t want it.