We all know how it starts. You buy a road bike. After a while, you need a better road bike. You decide to try mountain biking so you need one of those too. Then you get more into mountain biking and decide that you need a short travel trail bike for your local rides and something with a bit more suspension for those mountain holidays. On the road, things get serious so you invest in a high-end carbon race machine. But you don’t want to trash that on wet roads so you need a winter training bike for, you know, keeping your legs ticking over in the off season. That’s not to mention opportunities to try track cycling, singlespeeds, BMXs, jump bikes, recumbents, unicycles, off-road unicycles… the list literally goes on and on and on. While we completely understand the need for these new bikes, other people may not be quite so understanding. So if you’re looking for a reason to get that new bike you’ve been lusting after, or need a convincing justification to persuade your pa...