@loop_not_defined

Cata dungeons are by no means the hardest dungeons WoW has ever had, realistically that probably goes to TBC, Vanilla was mostly tank and spank and the difficulty came from shitty class mechanics.

I also remember what wrath dungeons were like in the early days before you could coast through the tournament 5 man loot pinata a few times and be heroic ready.

My biggest issue with cata dungeons(and this applies both to heroic and non heroic) is that blizzard has, in a lot of cases, confused challenging with long. I don't mind wiping a few times, I do mind killing my way through 45 minutes worth of trash to get to the boss. I don't have a lot of time to play, I don't raid much anymore, but I really enjoyed the fact that in wrath, if I could get a group I could pretty much always guarantee completing the instance in less than half an hour.

Casuals do not, for the most part, have an issue with reasonable levels of difficulty. If it's clear what I'm supposed to do I'm happy to do it, CC, stay out of the fire, it's all good. Time on the other hand is an issue, if I've got to allocate 2-3 hours to a heroic, it's just not going to happen, even if said heroic is piss easy. It's why most of my newer alts don't have the WC achievement because running through there takes for bloody ever.