I have been looking at the multitool tools available which contain a chain tool. At the moment I carry the allen keys, screwdrivers etc. that I need but these items seem like a good idea.
In particular, after reading of chains breaking and seeing members' packing kits I am wondering if I have just been extremely fortunate to have never experienced a broken chain either while touring or riding/commuting locally.
If I am riding on sealed roads and bicycle paths with a well-maintained bicycle, am I likely to ever need a chain tool? Or is it something that off-road mountain bike users or tourers in Central Asia on terrible roads would expect to use? Is it simply bad luck that a chain breaks or bad roads?
Does anyone have an example of when they needed to use a chain tool and the circumstances?