Normally this question would be highly subjective. But it cuts to heart of the current state of the hobby. When Dungeons & Dragons and RPGs developed in the 70's there was nothing else like it in gaming or entertainment. Since then things evolved until we had a variety of options for roleplaying with varying levels of grays between them as people develop various hybrid forms. 

For example with Virtual Tabletop Software you can move your games onto the Internet and have regular sessions with geographically separated players. People have used Bioware's Neverwinter Nights as a virtual battleboard projected onto a table.

I believe that traditional Tabletop Roleplaying has some enduring advantages over it's alternatives. And while it will never cause it become the fad it was in the late 70's/80's they are significant to allow the hobby to substained on a continuing basis. 

So pretend (or roleplay) that you are talking to somebody today and trying to convince them why they should play a tabletop game versus a MMORPG, CRPG, or other alternatives. Hopefully the answers will help others in recruiting and finding players for our games.