Originally Posted by
hairnet
it is just you. I have no problem riding with my messenger bag, with plenty of stuff in it, for several hours on my road bike.
No,
1. We were talking about a backpack not a messenger bag
2. A lot of other people have expressed the same feelings I have on this forum - anything on their back is uncomfortable
For the OP I'm not saying it's impossible the right kind of bag would be comfortable for him/her, but it's worth saying there's a very large chance it won't be. Plenty of people have also complained that they were never able to get comfortable with a messenger bag, either.