don't bag it.
Hell i don't even mulch it. I just let it fly (side discharge).

Puts all that nitrogen back into the soil which here is really poor (we have really poor soils overall). Adds to and creates new soil as it decomposes.

I never fertilize, my lawn looks great and grows like crazy. The one thing that really kicks your lawn over the top for looks here in Colorado is Ironite. Our soils are really poor in iron and iron gives it that deep green look

go buy some (anywhere that sells fertilizer has it) and spread it around, once a year or so (usually spring, but whenever) and possess the best looking easiest to maintain lawn around.