Silkies and Cochins and anything feather-legged.
Don't get me wrong they are gorgeous and have excellent personalities.
But those breeds are also very high maintenance. So as much as I love to see them at shows, they are not for me.
And Silkies lack some intelligence, which makes me not like the breed, but I still love the Silkies I own as much as my other chickens. Maybe for the same reason?
Also don't like any designer crosses or fads Deathlayers, Silkies, Ayam Cemani... I could go on and on. Now that I think about it though I respect the breeds it's just the people who worship them who bother me.
"English" Orpingtons irk me.