Ok, so I'm one of those folks who commutes on a road bike. Used to ride a hybrid but it was heavy, had an unnecessary suspension fork, and frankly I fell in love with my road bike (Trek 1500) and club riding, long rides, tri-relays, etc and never looked back.
So that's my only bike now and I need to make it work for commuting, which I do 2-3 times each week 8 miles each way (but hilly!). I just HATE wearing a backpack while riding a road bike. It's not comfortable! Does anyone here ride a straight-up road bike and commute like I do? Would one of those rear racks that doesn't require eyelets be advisable? I know where to buy them, so I don't need advice on that - just on whether this is a crazy thing to do to a road bike.
And a pure seatpost rack won't work. I'm not gonna stick a pack with my work computer, shoes, etc on a post sticking out 90 degrees from a carbon fiber seatpost and hanging over my wheel.