Opinion on the final secret badge?

I want your genuine opinion on the badge you get for beating the final final level, if you've beaten it and got to use it yourself.

Personally, I think it's a funny idea, but shouldn't have been locked behind such a grueling level. However I can't think of what reward would've been good enough, so I'm just happy we got one. I would've been much more upset if there was no reward at all!