According to my Future of LDraw? post there are a bunch of readers of this blog who use LDraw. But LDraw can only work with a steady stream of volunteers to make and review parts for use in new parts releases. (I also forgot to pimp the Flickr group for LDraw)
It is also a good start to making new parts if you wish to pursue that path. If you understand 3D software which can output 3DS format you can even get involved with LDraw part creation without leaving your known environment. Simply team up with someone who does understand the LDraw file format and make and convert a file from your preferred tool to LDraw format for tidying.
Remember that without volunteers the LDraw library would grind to a halt. Fresh faces are always welcome and necessary. If you like LDraw please consider helping it.
Image credit to LDraw.org, Elroy Davis (taltosvt) and Niels Bugge from top to bottom