Am I the only one who dislike reading Doujinshi (Yaoi version) of manga/anime which I have read?

I like yaoi & shounen ai, but i really cannot fathom that characters that I have read and known are being shipped around and sexualized.. Eg, Detective Conan, Naruto

But, i still read doujinshi for manga/anime that i havent read since I have no emotional connection with the characters.. Eg. Gintama, Free!, Yuri on Ice