I have to let you guys know that if i am going to be on a ride that is going to last more than a few hours and therefore, with more than one temperature, I'm going to bring extra gloves too. Why why would i rough it? gloves don't weigh anything. I might bring 2 extra pairs! and you know what, when it gets hot out, my hands get icky and sweaty. how nice to change gloves.

And bandaids? most of the people I ride with carry little first aid kits. Maybe I'm going to be home in 30 minutes, but maybe i'm going to be out all day. And just maybe, I'm going to run into a 10 year old who just crashed his bike! he might like a bandaid.

If i am riding with faster friends, I will wear a camelbak in the summertime even for a 25 mile ride. Why? I can drink at my leisure and in comfort.

I have a buddy who carries practically everything and the kitchen sink. He and a friend were on a 200k ride where something broke in the crank. My friend had EVERYTHING they needed to fix it and they completed the ride.
I REALLY like riding with that guy.

I agree with some of the other posters on here. Each of us is entitled to having our VERY own list of what we feel we "MUST HAVE" on a ride. I see no need to critique other people's lists. what they carry on their bike is their prerogative.