Ring and not the door bell kind.

With more and more people getting engaged with huge rings I ponder more about when I got my ring. My DH and I picked it out together. After trying on jumbo rings cause that's what the movies and ads and our friends tell us ladies we should have I moved on to something more simple. I picked a 1/2 carat set. When we got to hubby's truck thoughts began to swirl, is this the RIGHT one for SURE, should I have gotten a bigger carat? Does the carat size really mean he loves me more or less? I looked over and even asked my Husband should I have gotten the 1 carat? His reply was: Would you like the 1 carat? My mind was racing , oh it's bigger who wouldn't want bigger, but is bigger necessary? However my heart was content on a 1/2 carat ring. The ring was a symbol not the value of our union.
One day prior to our wedding Ken's sister showed me a magazine that had a huge ring in it. She asked wouldn't you like a ring like that? It brought to my attention that I had not shown her my ring yet. I went upstairs to Kens bathroom (soon to be my bathroom too) and got it from the medicine cabinet. Upon showing her she was in disbelief, glanced at the ring back at her ring the the ring in the box. We had the SAME ring. She had gotten her's 4 years prior at the same store. However I had never seen her ring and guess what??? It was the same carat size too! Kens dad told me his daughter always had good taste and that I must have good taste too. He then said welcome to the family. It will be one amazing story to share with grandkids someday.
I often see the huge rings and wonder why...is it the taste of the one who bought it, or the sales person wanting a higher comission by selling it, or for show?