"if someone would rather learn british english than american english, then they should move to Britain" so why do you use this app? Why are any of us using this app if your proper idea of learning is to simply move to another country? Your logic is dumb and hypocritical. Not surprising coming from an american, at all. I'll say it again because I know Americans don't like to listen the first time: There should be an option between american and british. If you learn british, you'll have a better understanding of canadian, irish, middle eastern, australian, really every other english that dominates the world. If you learn american, congratulations, you understand one country and can't spell anything right.
Also, as a hispanic, I don't really consider Mexican real Spanish out of them all. It's butchered, as well.