I'll preface this by telling you that I am a big fan of the Discovery, Science and History channels. Just to add context to my comments below.
You're quite right to be disinterested. Basically, it has reruns of old episodes of 48 Hours, a couple of generic 'true crime' series and not much else. It's pretty well summed up here as another A&E, only with less variety.
One thing I must disagree with is that it ever started out very good - this one was mediocre from the start. It was better as Discovery Times and that's not much of a compliment. We've had it since it started as ID and I don't think we have ever found anything of interest to watch there.