The Dwarf Affect Options

[MatrixJargon]

So I noticed something rather peculiar as of late. Now i've been running Shadowrun for awhile now, not as long as many of you, but a few good years. I've played in more third edition campaigns than I can directly recall (with only two or so of them actually completing a coherent plot) and four or five fourth edition campaigns. In all of this time, I've only played with a Dwarf PC is two sessions. One was a guest player, and the other was that same player returning to our group as a temp GM and decided to use the same character as a GM character.

I haven't played a single fourth campaign in which one of our players played a dwarf. (I don't particularly recall playing many with trolls either) and it just stunts me as to why. The majority of players I come across play humans or elves, in fact you didn't see much else until I started playing an ork (and i've played one in every campaign since). Now, in our current game, we have a human, two orks, and an elf; with another human player contemplating joining us.

Does anybody else have their own Dwarf Affect? Races they just....never see in their groups?