Originally Posted by
wolfchild
You've opened up a can of worms. That comment right there has a potential to create a heated debate which can drag on for 10 pages

...Personally I also prefer a backpack for commuting and errands.
I think anyone who lives in an urban area would go backpack. Anyone living in the woods and having a 25 mile RT commute to work in a metro might have an argument for a pannier, but once something needs to be carried by hand or as an uncomfortable backpack it's out for me as that degrades daily life too much.