Nothing too special here sorry for your experience but this is normal almost everywhere (worldwide).

Understand this from the perspective of a government employee that is at the bottom rung and has to deal with the public daily. They did not make the myriad of rules and requirements that their government wants. Someone else far away decide that you need certain types of ID and paperwork and who knows what else. This person at the bottom rung has to deal with all of these things and explain them to long lines of people that most of the time did not fully read the requirements before they showed up. Even if you were the cheery and helpful type a few months at the DMV will slowly kill your hope in humanity. Any worker that has layers of management coupled with layers of requirements for a service that everyone needs is going to have a tough time staying positive.