Puzzling me.

All Germanic languages are a pain to hold any note in. lol English is far better for it. Though there are also better languages for it than English too.
 
We're being more specific than that, Zep. It is Anglo-Frisian , rather than High or Low Germanic. It lacks the characteristics of present day Germanic that make it so coarse. :)
 
English = $$$.

Seriously though, by writing their lyrics in English they can reach more people from both a business and artistic perspective.