Dungeons

Why most of Dungeons are disabled here? This is a reason why dungeons queue are so long? Yesterday i was waiting 48 minutes and still dont find all players for dungeon lul. So how to get required item lvl for next dungeons, if i even cant do woltk/cata dungeons? :/
My items are so meh, cuz I cant do dungeons. The only dungs I did was on 20/30 lvl. After this i cant find players in queue. Will be this fixed?

Can I just know reason why Wotlk/Cata Dungeons are closed? :|

they are not scripted yet, they will be opened "soon". Maybe in 2-3 months, maybe more; we can not know