&gt;Free country and all, I just find it a massive waste; they&#x27;d be better off with some sew-ups and light rims instead of deep-section carbon jobs, but I guess they do it for the bling more than the performance.<p>Depends upon the roads you ride.  For anything less than 4&#x2F;5% aero is king.  Sure light weight feels nicer to ride, but if you&#x27;re after performance then you&#x27;re in the wrong place.<p>Saying that, perception plays a huge part in performance, so heh.