I have a road bike for my 16 mile commute to work, and carrying a backpack can be difficult especially when climbing the hills standing up. My backpack rolls side to side. Recently I have purchased a Rack and some panniers bags although my bicycle does not a way of attaching the rack on. I asked a bike shop if they could drill holes for a place to anchor the rack but they said you should never do that. I didn't get a reason why. Is it cause it will weaken the frame? What other methods could I use to attach this rack. And is putting a rack on a road bike a social fopaw. I use a road bike cause they are light weight, and more aerodynamic. And can handle the speeds that I get up to. I have tried to figure out a way to get rid of carrying any baggage on my commute. But I still have to carry one for a few reasons. So here is a question for all the roadies, Would it look bad if I were cruising along in my jersy on my road bike and had two bags hanging one each side of my rear wheels? Comments of any kind are appreciated, Thank you.