Basically the Pugsley is incorrect for almost all riding. Unless you plan to ride the beaches from Seattle to San Diego. Or maybe ride the Rocky Mountain trail in the middle of winter and need some flotation for the snow.That seems a bit harsh Russ. Never tried one myself but I've read where some people prefer them to regular bikes for single track and e.g. gravel logging roads. But I agree they don't appear to be very good for the ACA sort of touring on roads.
I meant it. Big fat soft 3", 4", 5" tires are wrong for almost all riding. Single track (dirt trails?) and gravel roads? Are people complaining about how awful their 2" mountain bikes are doing on those? The huge tires are designed for flotation. Floating on top of sand. Floating on top of soft dirt. Floating on top of snow. Most trails are fairly solid and hard. You don't need to float above the surface. Unless you are riding them when muddy. Can fat bikes be ridden on trails and hard roads? Yes. I have friends who rode them on paved roads and trails this year. They did OK on them. But they would have been faster on regular bikes. And easier riding. Fat bikes have a purpose and use. But its narrow. Anything outside of that specific use is somewhat foolish. If someone were going to race criteriums I would not advise them to get a fully loaded touring bike. It would work, but not real good.