The good news is that all the systems that still work are not those who failed immediately :-)
The bad news is they're now also approaching the normal life of a doohickie-thingie. I'm on the second A500 and the second A1200. The Apollo 1240 has needed some fixes already, but I'm not afraid of working the old soldering iron on it (I've already fitted an extra memory-slot I got from a non-working RS/6k motherboard (I still have two working ones, so no biggie :-) )
The thing is, for some of us these machines represent a lot of past and present fun, and should not be thrown out just because they might fail. However, once they DO fail, there's sadly not much you can do. That said, the thing that most often does fail is CIA chips, and these can still be fixed.