Other advantages of not doing yardwork...
Longer grass can survive better with low water. This is good to know if you are in a dry climate.
It is good for the local wildlife.
Some of us like pissing off uptight neighbours. :-)
Cheers,
Ben
"... I couldn't see how anyone could be educated by this self-propagating system in which people pass exams, teach others to pass exams, but nobody knows anything."
--Richard Feynman