I note with amusement the comments on here of those that find it incomprehensible that not everybody wants to follow the latest and so called greatest thing that is on offer for their latest, fastest, lightest bike. The fact that it may not suit their riding style or may actually cause damage to their knees is evidently of no consequence at all. If the pros wear it/fit it/use it then they must follow suit. A marketing mans dream.
Marketing mumbo jumbo writ large

Appreciated your previous reply and had a read of your blog link, my own experience wasn't a million miles away. Though I gave the clipless pedals a lot less time, one fall with no injury, and not enough perceived benefit, was enough to turn me off them. However I don't disagree with those that will cite the benefit when climbing out of the saddle or sprinting hard. But I only ever sprint for my own amusement and never flat out like a proper sprinter would. I don't race, will never race and can climb well enough for my needs as it is. Anything clipless could give me, climbing wise, would be dwarfed by the benefit losing 4 stone would give me
But, being a pedantic type, I do take issue with some of the claims, or almost religious mantras, trotted out by clipless disciples:-
you will fall but it's just funny not dangerous and the only thing hurt is your pride - this, as your own tale evidences, is absolute bollocks, but there does seem to be almost an 'omerta' around admissions of this nature. It's also perfectly feasible to speculate around the really unlucky ones that don't survive to relate their tale of a 'clipless moment'.
the performance difference is like night and day - let's see the evidence then, Norm on here gave some detail as to how much faster he felt he was on clipless for a given ride. But most resort to ridiculous hyperbole which the, admittedly small amount of, available data would indicate just cannot be accurate. I would also question exactly what flat pedals and shoes they have ridden in for their comparative purposes. I use pinned platforms and, with grippy soled MTB trainers, they allow for a very secure ride.
an end to feet slipping off pedals and poor foot positioning - again what do they compare this to and how poor could their ability be around putting a foot on a pedal? I've not suffered from any foot slippage issues and I enjoy the fact that I can reposition my foot in motion and choose a different position for the sort of pedalling I'm currently doing. For example I would tend to pedal nearer the front of my foot when pushing hard but for pootling, or a long climb, then the pedal will be more central to my foot.
discomfort with clipless - hotfoot, cramps, knee pain and other related issues - these all get dismissed as just being a setup thing and what you really need is to spend more money on inserts/fitting/shoes/pedals to resolve it. What's often ignored in this is your own personal fitness levels and riding posture. The same as with bike setup, you can get it all spot on for you when you're pedalling well and feel good. As you tire, and your posture slumps, then injuries can occur, being unable to reposition your feet can make this worse.
All that aside I've always been a big fan of the latest gadgets and I'll buy into things just to be able to eliminate anything external I could possibly blame for not reaching a standard. For golf I have custom made clubs and only ever use the same high quality golf balls. But that's mainly vanity and I know that any performance gain is probably mental over physical. I play to a decent mid single figures handicap and I could do this with any reasonable OTP set of clubs and cheapish golf balls. But when I was a higher handicap I was convinced that the equipment played a far bigger part than it does in comparison to the physical. Pros in every sport know this and also know that it's only at a high level that top end equipment gives the biggest returns or that miniscule gains matter. But you don't have to travel that far down the food chain from pro level before the returns are too small to be noticed.
For clipless pedals that means that if you don't race, sprint regularly or climb agressively then you're just another fish on a marketing hook. Absolutely nothing wrong with that, ride however you want in whatever kit you like, but there's no need to try and do the marketing job for the industry.