Tanya
I completely agree - the temptation to upgrade and ‘own’ the latest device(s) has become a way of life for most of us - and has become a fundamental part of our behaviour as consumers. Having owned (and replaced) quite a few Apple products myself, I am as guilty of having done this in the past.
The issue is also that companies do not make it easy, or affordable, for consumers to be able to upgrade the components of their old devices, as their prime goal is to make more profit. Equal responsibility lies with the consumer and producer to think more ethically and in a more sustainable manner. This will require a fundamental change in behaviour.