on long rides I wear a Camelbak and I carry everything in it. I don't really care what people think - I live alone and have no one to sag for me so if I don't carry it and need it - I'm out of luck. Also, with our heat here in NM, my 100 oz camelback can be pretty light by the time I get home. I also carry my extra water bottles (full) there in case I "can't" get to a convenience store for some reason during the ride. everything=spare tube, spare co2 cartridges, cell phone, food, extra electrolyte packs, tea bags, tire levers, leatherman, garage door opener, 2 full extra water bottles, empty baggies (for trash), bandaids.
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"