I have a question (don't throw rotten tomatoes at me....lol) but it seems like all these threads I read on engagement rings a lot of people are trying to upgrade to a bigger better rock. Isn't it "a diamond is forever" so why would you want to get a new one when the original one is what was put on your finger in the first place? Im just kinda confused. To me, its not about how big the rock is, but what it represents, no? When DF and I got our ring, the saleslady was like "in a few years, upgrade...blah, blah..." Why would one do that? If you could, please clarify...thanks! 
