I have 52/11 and very often wish I had a higher gear, and I have never raced.Really? A 52/11 is 127 gear-inch and gives 38 mph at 100 rpm. Can you really ride that fast except on a big downhill where you would go as fast or faster by just tucking in and coasting? My problem with the excessive use of 11T cogs is that you give up a far more useful interior cog to get it.
38 MPH is fast enough for Kansas, but not for a lot of other places. On rolling hills, I want to start that next uphill going as fast as I can manage. Besides, I'm not really a 100-RPM kind of guy. And even though I don't race, going fast is fun, and going 45 MPH is more fun than going 38. Also, it you ever hope to get going 55 MPH, you need to pedal as hard as you can at the very top of the hill. So no, of course I don't need
a bigger gear, but I want one because it's more fun. It's good not only for downhills, but also for tailwinds.