I'd kill myself if I had to listen to Sibelius all the time, too.
In my misspent youth I met a girl from Finland while traveling in Ireland. We talked at length about the widespread disposition of the Finns towards severe depression. The Finnish character, which is highly shared because the population is so homogeneous, and although it is admirable in many ways, is among the most, if not the most, gloomy in all the world.
Nine months of winter will do that to you.