> It‘s extremely difficult to predict the lifetime of a consumer product as it also depends on how it’s being used.

That's actually false. Almost all of the engineered goods are engineered to a certain lifetime. Usually companies have internal endurance testing results for every item. The ones who care about will release their expectations.

Ninety percent of manufactured goods are ultimately trash, pride in craftsmanship has gone by the wayside. Things are shoved through production with little to no f*cks given in regards to quality, if the S.O.B is just a gnats ass within tolerance, just send it, and pump out as many more as you can because we have quotas and due dates to meet.