http://www.bikeraceinfo.com/tdf/tdfstats.html Tour De France statistics...
Compare the stats from 80's to now-a-days. All that trouble with new tech in frame material, stiffness, gears, "aero", for the sake of performance, efficiency, and speed.... and the difference is.....
That's what happens when you test things without directly testing things. True results come out. No wind tunels. Which leads me to believe that modern is 90% marketing hype and people buying it. It's a bicycle; Not an airplane.
It doesn't get easier; You just think you go faster.