Maybe it's second to the General forum because it's interesting, and at times, educational. It's not a forum for advocating death, or namecalling, or "putting people down", and when those things happen, we speak up.
If people don't enjoy participating in the discussions, or can't do it according to the rules, that's no reason to remove the forum, is it? There are several fora here that you'll never see me commenting in, but neither would I suggest they be eliminated.
The bottom line is that interesting is what brings people back, for the most part. EO gets a lot of slack because it is as much community as website, but even that won't save it if it becomes uninteresting, IMO.
When you advocate for removing the Soapbox, be careful what you ask for...