Did you know there are Venom Dart Traps? They don't generate unless you're playing No Traps but they are craftable with a normal dart trap and spider fangsI hate the dart traps that are underground. Somehow, without fail, I find myself poisoned when I'm near them (Technically it should be venom, but were not gonna get into that)
I don't think hornets are that bad, but I hate the rest, but one thing is that they usually become less annoying with like endgame prehardmode gear, espically with the cobalt/obsidian shield. Another one I feel is elemental mimics cause they still do a lot of damage even a fair bit into hardmode, and you often encounter them where you don't have to space to fight them properly (there not too bad if you fight them on a arena with the key of light which is what I think a lot of people do to get those op weapons)EVERY. SINGLE. BAT. EVER
also Hornets, Spiked Slimes and Worms. At one instance i couldnt get near a jungle spiked slime because it wouldnt stop using its attack. And worms are SO annoying, especially when they appear when your going down a hellavator or something. And in most cases they like show off and pretend to be coming up and you can hear the shuffling noise they make, but they almost never come up or go near you. Today this happened and instead of me killing the worm in the end, it dissapeared.
Also when you're trying to build without calming/peace candle in the surface jungle, and they show up out of nowhere to knock you away from the build.getting jumped by a jungle bat in an enclosed space
i don't have a story but for me the most annoying enemy is a bat (any type) because they are small and fast and as i just started new character (only magic) it's hard to take them out with slow bolts from my rod