Not that I have anything more to say than all the other posters, I can only say I have looked at upgrading to a 180/182 more times than I can remember. I bought an older 172 in the late 80's and over the years it has taken me over a good portion of the lower 48. I always thought how much nicer it would be to have something bigger and faster. Everytime I would sit down and crunch the numbers I realized it would cost me much more in the long run to own and operate the bigger plane. As has been said the fuel cost difference in time/distance traveled is not that much different. It all came down to the much more exxpensive overall costs that come with owning a more complex airplane.
The main reason I fly is because I like to fly for pleasure, no other reason, except the occasional long cross country. Having an economical plane to just 'go for a quick ride' makes more sense to me, and wallet. If most of my flying was business or travel I would upgrade.
