I take issue with your posted opinion. I bought a carbon fibre bottle cage to replace my old and overly heavy alloy one and have made a saving of 1.37 grammes. This has made all the difference in the world to my average speed and my commute times as well as immeasurably improving the handling and responsiveness of my "machine". Alternatively it means I can squeeze an extra 1.37ml of high energy, isotonic, esoteric drink into my bottle to keep me sustained for longer in the saddle. And all that for only £45 + postage.
Oh dear, oh dear, oh dear. You just don't get it, do you?
You feel the need yet again to give your so-called opinion on a matter with which you are clearly unfamiliar.
Writing as a Cat-19 racer with almost some experience of hills and corners, I can assure you that everything you have thought since early childhood is wrong, wrong, wrong. Everything. If you cared as little as you understood, you would be twice as likely to have failed to understand all those things about which you clearly care not one jot.
Your use of so-called 'facts' to back up your perverse and wrong-headed logic shows that you know less and care less about cycling than the pet gerbil I had when I was seven. Maybe not less, but certainly no more.
Clearly (if you'd bothered to think about it and not just trot out tired, unfounded myths) you'd be aware that the rotational mass of a wheel is a function of the rider remaining seated while climbing by using quadrilaterally extraposed muscle groups asymmetrically in short, anaerobic herds of sustained energy-graft manipulation.
It's what Lance Armstrong did - and remember, he didn't win the TdF more times than anyone else in history hasn't won it.
Now, please take your puerile prejudices elsewhere and leave the erudition to me.
I will, of course, be putting them up for sale immediately!!! 
