The usual rule observed in everyday life is that the higher the cost of a guarantee, the less likely you are ever to need it. A by-product of this is that when something goes out of guarantee, or you don't extend the warranty for a further year for some astronomical sum, the appliance fails.
Just at the moment we're living in the middle of an exception. 3½ years into a free 5yr warranty the Smeg* dishwasher gave up. Error code 6. Someone came, checked it out, ordered parts, came back, replaced parts. Next wash error code 6 is flashing. Canny engineer on 3rd visit spots that error code 6 came up 1 minute after the first error code (8) has flashed. Nifty concealment strategy from dishwasher is now thwarted. Parts are on order. 4th visit awaited.
St James', Whitley we had a flat roof on the main body of the church, and one morning water was pouring through near the pulpit. Church roof + leak usually = large bills and an appeal. However Pete, the church warden, had the presence of mind to check the filing cabinet. The roof had been resurfaced and had a 10 yr warranty. Luckily the work had been done 9½ years previously. Result: a free repair.
Why can't it always work like that?
* I feel the need to point out this is a bog standard, white box dishwasher, not a v expensive retro-style brightly coloured one!