That is the nature of renting. Unless you are flying 100-150 hours per
year renting is going to save you a lot of money and be more
predictable.

Owning carries implicitly 'you _will_ fly more' however, at least it
has for me. "You should only buy if your fly 100 hours or more per
year" isn't necessarily the best advice, unless your schedule is such
that you _cant_ fly more than 100-150 hours a year.

Honestly the best metaphor I can think of it is an attractive
girlfriend/mistress vs. a prostitute. Sure the physical mechanics are
the same, sure they'll both hit you in the wallet...

To an accountant, Prostitutes make certain business sense. (I've
actually heard more than one of them justify their lack of
relationship with this exact line).

But that doesn't mean they compare to the "real" thing... Its the
emotion that makes all the difference