There are many different kinds of "worsts" when you're talking about job experiences. I could go on all day about the crazy/stupid/bizarre people I've put up with over the years. In fact, I have; I regaled many stories about my restaurant days while at Brickfair with @AvohkahTamer, Zatth (from Muro De La Historia), Sumiki and his parents, and the McDonald's customers who had to put up with our constant laughter.
But if we're talking about straight up bad experiences, there is one that sticks out in my mind like a thumb still caught in the car door.
I had my first job for 8-9 years, depending on how you want to look at it. I started right after I turned 16 and this happened sometime during that first half-year or so. I remember prepping some food for the lunch rush while one of the "managers" (the position is more-so a manager-in-training deal) was washing dishes behind me. I was constantly a target because I had no girlfriend nor the desire to be in any kind of "relationship" at the time. Again, I was only sixteen. Well she was off on this kick again that day and trying to convince me that my not wanting a girlfriend meant I was clearly asexual to which I stressed, again, that I'm as straight as it gets and my reasons for not wanting a girlfriend were far more practical.
This is the part where it gets ugly. She tells me that I need to go watch a movie (which will remain unnamed) that is supposed to serve as some sort of example of what is going to happen to me (because movies are so accurate for demonstrating these things, right?). Well, I'd never seen the movie, but between commercials, what it was rated for, and even just the title it's as obvious as somebody nailing a gym sock to your nose what sort of movie it was. I immediately shot her suggestion down stating that "I don't watch those kinds of movies". "Why not?" she asks. "You're sixteen; you're old enough to make your own decisions and watch things like that." I tell her that my age and freedom from my parent's authority to choose or lack thereof have absolutely nothing to do with it. "Then why not watch it?" she asks.
"Because I have morals," I say.
Her response? She laughs in my face. There's no shame, no apologies, no remorse whatsoever.
I had to put up with this kind of trash for many years. Even when she was fired she got rehired only a couple years later. We butt heads often and there was frequently an undertone of religious discrimination when she spoke to me, even when it was completely irrelevant to the topic at hand.
When I finally quit my job to focus on college full-time, I didn't burn bridges but I never looked back. Now that I'm out of college, I'm washing dishes part time somewhere else until I can capitalize on my degree. I could have my old job back any time I want. They need help and I'm one of the best workers they ever had. The owner is hilarious and a great guy. I'd easily be making more per hour than I do with my current job. But I'm not going back because that same woman, who has had the gall to ask me to come back on multiple occasions, still works there. Screw that. I don't need that kind of negativity in my life and I haven't even mentioned the parts where she's actually no good at her job.
I'll bet you weren't expecting a novella for an answer, were you?
For many years I was always drawn to the spell casting type characters. Being able to throw fireballs and perform other supernatural feats always seemed more appealing than mundane archetypes who swung swords or knocked arrows. As of late though, I've broadened my horizons and my tastes. Sometimes it's fun to be in the middle of the fight, sending foes flying through the airs while their pitiful blows ricochet off my armor. There's something satisfying in setting up the perfect kill, striking from the shadows, and disappearing like mist on a hot summer's day.
If I had to guess, I'd say Skyrim is to blame for this change of heart. If you go full mage in that game, you're either constantly running out of magicka, which is no fun, or you've finally managed to enchant your way to 0-cost spells, which is not challenging and, ergo, no fun.