First off, like I said, a lot of it is based on my personal experience, and a lot of it doesn't even have to do with the country itself.
I hate the "shariah" that is practiced here.
I hate that they ignore major issues while focusing on trivial, insignificant things. For example the red things on valentines day. I agree with what they did, but all there are so many more important things that they just willingly ignore.
I hate how crappy their traffic law enforcement is. My brother is 14, half the kids in his class drive and have cars. I know 3 people that have been killed in car accidents caused by underage drivers, and several people that were seriously injured. In all the cases, the driver was saudi, in all the cases, they were free to go.
I despise the racism in favor of saudis and against foreigners, especially those from india, pakistan, south east asia, etc.
There is nothing to do but go to malls. Absolutely no other form of entertainment, halal or otherwise.
Most "religious policemen" ie muttwia "advise" people in the exact opposite way as described by the prophet peace be upon him.
I can't think of any more at the moment, but if I do I'll come back and add them.
There are definitely some good things about living here, though, but most could be said for any muslim country, tbh. I like hearing the adhan, I like there being a mosque wherever you are. I like being able to visit the kaba more often than I would be if I didn't live here..
Hope that helps.. I apologize if I'm being to pessimistic, but this subject brings me downnnn. Got any questions I could answer?
edit- i hate how unsafe it is. Women do not walk in the streets for fear of being harassed/attacked. This is broad daylight btw, not at night. Stopping taxis in the street is rare, since those are also unsafe. Whenever my mom and I need to go somewhere and my dad can't take us (and since women can't drive we can't go alone), we call a taxi company. In syria I can walk home alone at midnight and be safe (bi'thni Allah, of course), and here I can't walk home in the middle of the day. There have been so many kidnappings of children, and even adults. My teachers son was kidnapped and almost raped when he was a teenager. He know some karate and attacked the guy, and escaped and ran till he found a police car. He told the police what happened, they asked if the kidnapper had a gun. He said no, the police said there was nothing they could do. They just left.