I'm not a spreadsheet kind of person, but it is pretty difficult to argue with the proposition that for the great majority of pilots, it is almost impossible to justify aircraft ownership on purely economic terms (at least single ownership, as opposed to a share in a syndicate).
Don't buy an airplane that you can easily rent (i.e., a spam can). If you must own, purchase something that would otherwise be unavailable to you (e.g., a float plane, a Pitts, etc. etc.); at least you'll get maximum fun value for your money.
There are no minimum hours, so if I want I can hop in, fly the 15 miles to Compton Abbas, stop for three days and then fly home again.
Sounds good.