Saving is a habit. Every one should get this habit from his childhood. Like what is the difference between buying $1 and $10 of pens? The pen serves the same function. The differences are their design and manufactures. Why should we waste $9 to buy a pen? Some one could probably say they like it or may think the higher price of the pen ,the better it is. I don't think so.
Actually your said just realizing me.
Why should we waste more $ or money for same function like smart phone.
I just bought new smart phone, and if i seeing from "functional" perspective. My new phone not much different with my previous phone. I use it for social media, online, call, chat, music, and many more.
Maybe i just waste my money to same "function" of phone.