Crg
House Bee
The general attitude is that Langstroth and Dadant created the perfect hive and therefor there is no need to have anything else. So I feel that in the US the knowledge one can gain on beecraft is sorta close minded.
There isn't really any need for anything else. In the UK they've got so many different types to confuse new beekeepers with no real gain.
Then they spend the rest of their lives arguing about them and ignoring the fact they're supposed to be beekeepers - not hivekeepers.