Hmmm... my philosophy is, a lawn should provide cover for if I ever have to sneak out under a hail of bullets. And my dad's is that it's worth the money to hire someone to cut it. We're happy here, whatever the grass length!
I just never realized growing up as a kid that you had to
work to make grass grow. We never seeded, never fertilized our yards and they were beautiful and needed mowing more often than I cared for.
As a side story, my dad actually was mowing one night and ran over his foot. There was no permanent damage. Let's just say he and the mower were sufficiently lubricated...