I did the same thing, lurked for years before creating an account, but I think my high (IMO) but still respectably low UID says enough by itself...
As for these "interesting discussions" you mention, they are very rare and only found at night, in near darkness illuminated only by the glow of monitors, network switches, and that annoying security light that no one can quite figure out how to turn off, fueled by way too much caffeine, and best read while intoxicated or some set base of intoxication approaching superman status. This, plus ... profit!