> 2-3 years each That's not a very long time. Business laptops' extended warranty is 5, and to be honest, 5-6 years old laptops - actually, nearly anything sin

> 2-3 years each That's not a very long time. Business laptops' extended warranty is 5, and to be honest, 5-6 years old laptops - actually, nearly anything since modern sleep and aes-ni - are perfectly enough, so instead of buying new, it really should be possible to fix a hinge, a display, a keyboard once in a while, instead of needing to buy a new machine.