It's an old argument, and I'm a rucksac kinda guy. No need for that ugly rack, no need to bugger around taking a pannier off when buying a paper. I'm also the sort of guy who doesn't take work home, but for the first time ever I've needed to transport my laptop from work to home. Now that really requires panniers: was it ever uncomfortable. Damn thing doesn't even weigh that much; but it made a lot of difference strapped to my back. Normally all I got (at most) is my essential tools, spare light, trousers, shirt, anti-commando pants and money/keys etc. Next time I'll take a taxi.