I’m indecisive…
I’m exactly where @jbroadhead is re: spiders and salticids (secretly wonder if my affection for salt is some sub-conscious motivator here? 
though they are just pretty cute for something terrifying) but I’m hoping to eventually be where @tigerbb is!
By the way, if anyone is curious, it takes ticks at least a few minutes to transmit anything (at least what we’re working with in the northeast U.S.) and most things it’s more like many hours while they get their mouth parts attached and in you so while it’s creepy to hold them for a photo we’re not in any danger unless we lose track of them and they hide on us and bite
That being said, I’m with @tiwane and everyone else on ticks, especially deer/ black-legged.
FYI more tick-related conversations:
https://forum.inaturalist.org/t/anyone-participating-in-the-tick-exposure-behavioral-study-via-the-tickapp/3353
https://forum.inaturalist.org/t/deet-and-other-repellents-for-ticks/2911
This is my biggest ‘nope’ aside from wolf spiders and their other freaky friends:
https://www.inaturalist.org/taxa/49553-Scutigeromorpha
so much so that I just had to hold my hand in front of the screen while copying the link because the image was making me convulse. I see some beauty in them but, n.o.p.e at the present.
I have a tough time with hornets and yellowjackets and their aggressiveness but I am fascinated bypolistes
Not a fan of invasive plants or animals either. Feral cats, house sparrows, starlings etc. but it isn’t like the myriapod who shall not be named from the last paragraph.