"But if you think about it, how is using the selfie stick not improving our lives?"
Okay Cherlynn I've thought about it as you challenged, and here is my answer to your question. It is not improving our lives, as it's a very immediate reminder of the increasingly self-absorbed nature of our society. For some people this can be depressing, and can result in feelings of alienation. That's why it's not improving our lives.
I think one of the underlying frustrations with selfies, is that selfies and selfie sticks feel like they reward selfishness. Isn't it better to foster a sense of community by having a friendly passerby help you take a photo? It'll probably look better too.