My phones always come to their death when i either lose them, or something stupid happens to them.
I, myself do not treasure my belongings unless they have a special meaning, like your memory's with your phone. But I only usually care for things that I have won without buying, as they symbolise my successes. And things passed down in my family and gifts from friends.
The fate of my old computer when I got a new is that me and some friends took out the parts of value, donated them, and replaced them with fireworks. We took it out to a field, set a light and watched the prettiness of it's death.