Unlike many here I refuse to assume what the 'majority' do or don't do. But there are a significant number of players that base the race/faction they play on racials because of advantages, and that is a fact. Over the years I've seen countless 'wut is the best race for <thing>' posts, Blizzard themselves have commented on the kind of player that does this (generally mythic raiders, hardcore PvPers, etc) and I myself have known many, many people who have race changed many times to gain the advantages of superior racials.
And there are plenty of people who play 'short' races. Its easy to look at a vague pie chart and forget that what we're looking at is %'s of millions upon millions of people. But hey, keep doing the "I don't like it so nobody does" shtick.