I agree with shinningstar , I hate leeches because they are sort of primeval in their appearance. Ever since I watched African Queen with Humphrey Bogart they make my spine shiver. It's just one of those things.
Do you keep a look out for strange creatures from outer space too? I assume you've seen Alien!
No Richard , what has alliens got to do with it??? Oh yes I get it ..green lights over Derbyshire!!!!!!!!!

To be honest I didn't watch Alien 1, 2 , 3 or whatever I am too much of a coward.
It is just one of those things that trigger something inside you that you cannot forget. UUggghhh leeches is just one of those things for me ....I also have a thing about blood worm, great fish food etc etc etc but on my hand & I nearly shriek....which for a really practical person who doesn't mind getting their hands dirty is hard to understand.
p.s. I work with someone who actually has had to burn leeches off them when going through swamps in the far east etc.... too much info..............