Being a server is also very repetitive and doesn't require much skill (sorry if that insults any servers, but I don't see how server is a more skilled job than a cook)
I'm not saying being a server is worth 2x as much as a cook but I can see how they could get paid more. In the same vein a bartender makes hella ducats more than either a server or a cook and most of the time they are just serving beer or vodka & cranberry drinks.
I literally don't understand why opening a beer warrants a (basically mandatory) $1 dollar tip. I've come to viewing it as essentially a bribe for future service, which has caused it to leave a bad taste in my mouth.