The way I see it, the biggest abnormality in Japan is without a doubt the Sex industry and that is almost the only thing I dislike about japan and my guess is that's what attracting most of the "weirdos". The rest lies within the cosplay/anime/manga-area I guess(mainly kids, so why bother targeting them with insults?), but I can very easily ignore it all even when I come in touch with it pretty often from time to time...
I rather pay focus on the things I like bout Japan, which is; Anime(90-95% are junk but the 10-5% are worth 10kilo gold/episode), Japanese history, video games(in my case;JRPG), JRock, the technology and the language ofcourse, including some enchanting poems
Now in which other country can u find those particular things with the Japanese touch in it?
Nowhere ofcourse..