[quote=@souleaterfan320]
<Snipped quote by Host>

Because everything else has already been done too many times.

And tragedy is well known to pull off the best emotional effect.
[/quote]

I don't agree. I'd venture to say that tragedy has been done more than a lot of other things, actually. But apart from that, we have hundreds of arcs; you can't have a concept that gets stale, because we'll cover a lot, and to different every time.