I think most of the people aren't educated enough to know much about the 4C of the diamonds, and as long as the diamond looks pretty, they seem to be fine with them. None of my friends know their diamond's clarity, color, or cut. They know the carat, but that's about it. Only few people care so much about the quality of the diamonds in US, which I think is better LOL. It's about you being happy with it, more you educate yourself, the chances are you want something better...which happened to me. My 1st E-ring was .75 carat H VS2 Round, then I wanted something different and bigger I go 2.07 Radiant H VS1, then I found Price Scope. It is all down hill.....
I'm from Japan, and people there get high color/high clarity/high cut, size is the last thing they think about(average is .3-.5carat). You'll be surprised that so many people have D IF diamonds.
Interesting thing is they don't wear their E-rings once they tie the not. They put it away and only wear in the special occasion like wedding or party, which is a big waste in my opinion. But you rarely see any women with wedding band and E-ring together in Japan. I'm sure if I go back everyone will think my rings are fake.