Actually, no, I've never been rude to anyone who works in fast food. I'm generally pretty tolerant and friendly to anyone who works in any kind of service industry. There was one time, I blew up at the bartender at a restaurant I used to frequent, because I could see the cooks in the kitchen doing something absolutely unacceptable to my burger, after I had to send the first one back because it wasn't cooked the way I asked for it. That was the one and only time I lost my temper with someone who was serving me food. I knew it wasn't the bartender's fault that the kitchen staff were fucking with my food, but I was pissed, because it used to be one of my favorite places to eat, and the service and quality has been going downhill fast over the last couple of years. I went back the next day and apologized to the bartender for losing my temper, but I haven't gone back to eat there. Those girls who worked in the kitchen though... Yeah, they lost their jobs.
As for fast food, I don't expect them to get my order right, because I don't like to be disappointed. I never make any special orders, and they still manage to fuck it up half the time, but as I said, when I get fast food, I'm in a hurry, and it's not worth my time to go back and bitch at a person who already hates their job, and me.
but in a regular restaurant, if I order my burger rare, and I get it well done, I will send it back, but I will do so politely the first time. If the second one is fucked up, then I'm going to start getting pissed, and I'll tell my server that I'm going to take my business elsewhere and I'm not paying for fucked up food. Or, I'll just leave the food on the table, and get up and leave if I haven't had any drinks.
In my previous post, I was simply taking a contradictory stance to the original post, but I meant most of what I said. I'm not the type of person to harass fast food workers, but if you settle for a shit job, and then complain about how shitty it is, you're a hypocrite, and I have no sympathy for you.