I don't own D3, nor have I played. Not to say that I wouldn't like to however.
I have been posting here since October 2003 and Doom 3 has been talked about the entire time, and probably has been the topic of many threads long before I arrived. I for one am so incredibly glad that the game is out so that we can all stop talking about what it will be like. Likely, in a few months most will have packed D3 away to the game drawer. Now, if only HL2 would come out b/c that game has been hyped and discussed so much that is nearly unhealthy.
Enjoy your D3 gaming