If I am camping, I carry a frame that converts my thermarest into a chair.

I carry two cooking pots as the meals I cook require it.

I carry 3 sets of biking shorts as I need the variety to keep comfortable.

I carry a comfortable pair of off-bike shoes because Teva's create painful blisters.

I carry two pairs of quick dry underwear because 1 gets dirty after while.

I carry rain pants as an extra layer in case it gets cold and to stay dry in a downpour.

I carry an iPad to hold extra photos and to pass the time.

I carry an iPhone to listen to music and audio books, call my wife, and for emergencies.

Bike touring is neither a race nor a weight contest. If you like to ride with a minimum amount of weight, knock yourself out. I have other priorities. In my experience, more weight doesn't cause much problem on the flats. It is only going uphill that I feel it but that is why I have low gears on my bike.

Here is my default packing list:

Tent
Sleeping Bag
Sleeping Pad
Synch Strap
2 bungee Cords
Pillow
Headlamp
Thermarest Chair
Rope

Stove
Cozy
Wind Screen
Cutting Board
Pots
Wooden Spoon
Plastic Utensils
Sponge
Leatherman Juice 2

3 Bike Shorts
3 Bike Shirts (2 wool, one for off-bike)
2 Headsweats
2 Pair Gloves
Reflective Vest
2 Pair wool socks
Biking Shoes
Leg Warmers
Rain Jacket
Rain Pants

1 Pair pants
Green Cotton Overshirt (W)
2 pair underwear
Walking Shoes
Hat
Camptowel
Black long sleeve undershirt
2 Hankerchiefs
1 Kerchief with Bug Repellant

Front Bike Bag
Chamois Butter
Sunscreen
Patch Kit
2 Tubes
Zipties
1 Pen with Duct Tape
1 roll electrician's tape
1 rear flashing light
Handy wipes
Small Writing pad
Cards to hand out
Reading Glasses
Puzzle Book

S&S Coupler wrench
2 aluminum tire levers
1 Spoke wrench
1 Multi-tool
1 Speed Lever for tires
1 bolt wrench
1 brake cable
1 gear cable
Nuts and Bolts
Fiber Fix Spokes
Hyper Cracker
Extra Spokes
Tire Boots
extra chain links and pins
Tri flow Oil
Q-tips
Rag
Latex Gloves

4 Panniers
Bike Pump
Helmet
Mirror
Sunglasses (W)
Camelback
Metal fuel bottle
Plastic Water bottle
Cable and lock (key on Camelback)

Toiletries
Insect Repellent
Maps
Wallet

iPhone
Charger
Camera with Clean Memory Chip