Though, as others have pointed out, carry-ons can put a damper on the idea, I tend to do this. Even before carry-ons became a consideration, I've been mystified by people that want to get on the plane first. Umm, more time in the aluminum tube in an uncomfortable seat? No thanks, I'll wait. I understand that it may not work for everyone, but I typically check everything but a laptop bag, and get on as late as I can. Grab a latte after getting off the plane, and stand by the luggage output for 15 minutes while sipping my delicious (okay, it's the airport: barely palatable) coffee beverage.
Even today when you get booked flights with no carry-on room, the gate agent comes on the PA: "if you check your carry-on, we'll let you board first!" If I check my bag and don't have a carry-on anymore, and I have an assigned seat, how about I board dead last instead? Because I personally don't view being first on the plane as a reward.