[quote name='swee'pea99' timestamp='1283210994' post='1380457']
I'm amazed so many people use them. I'm not being smug - honest - but I haven't used one since I re-took up cycling seven or eight years ago. DIY. It's not difficult, and with the amount of stuff on the web these days - bicycletutor, youtube, parktools, sheldon - there can't be much you can't get a demo on.
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yes and no, firstly you need to have the interest and some level of aptitude, you also need to have the tools you need and these can be expensive on their own. Then there's the knowledge about what bits you need to buy and what works with what. I find all of the sites you mention very useful but much more so now that I've had some practice and have bought a few more tools. Initially I found it all very daunting and confusing. I've spent time and money on improving that, reading up on the web, paying a mechanic to do my first bike setup with me. Paying for further tuition, grilling folks on rides and forums about technical details and finally picking up old bikes from the tip to totally strip and rebuild.
This is with the luxury of an understanding family, an inclination towards this sort of thing, plenty of space and tools in a large garage, time and money to indulge myself and multiple bikes so that disasters(and I've had some) don't leave me off the road.
I can see how it's not attractive, or practical, for others and a reliable LBS would be great.