Because the average electronic component is broken, most of it is not because it has been used for a long time, wear and tear and things like that, it is basically because of impact load and things like that (I don't know exactly what that is).
The impact load is not related to the use of time, just bought may also be broken because of this, some use for a long time will not be affected by this impact, this is also related to luck, so it is in line with the exponential distribution of no memory.
Anyway, this is not the same thing as the life of our people or the life of any other living thing.