[mnm1]

You are right. Few do. If people cared about the environment that much, they would have lobbied for laws against planned obsolescence. Me buying 5 phones or even 500 won't make a difference to the environment. Laws forcing phone makers to support their phones for a minimum of x years might. Clearly, our society is not interested in that. Why should I then go out of my way to inconvenience myself to do something that will make zero difference? No reason to at all.