What is the hardest language to learn?

[KaBooM]

I think nearly everyone around central Europe grows up with English these days. At least a whole bunch of us did.

English is actually being taught all around the world as it's the most important language these days, for example in the UAE I learnt ABC when I was 4 :p but that was 10 years ago, now my 7 years old brother speaks better than I was speaking when I was at his age lol.

And I still think Arabic is the hardest language to learn. (I'm Arabic yea, but I figured that out from the people I know who learnt Arabic)