I'm guessing you've never been to any developing country. India doesn't even respect traffic lights or the concept of "lanes." You have modern cars sharing the roads with literal ox-drawn carriages and they're all splitting lanes with hundreds of little scooters.
Hell, even Italy is a complete clusterfuck. If Germany is stressful to drive in for someone I would question if that person is comfortable behind the wheel of a car at all.
In fact, I'll say this is one of the big problems with how lax driving standards are in America. There are lots of people who drive everywhere here who do NOT have the skill, attention span, or reflexes to be behind the wheel of a car. It's too economically essential to be a functioning member of society to make the standards any stricter, but they're so lax that we have a glut of terrible drivers. Terrible drivers lead to overly permissive road design (that winds up being unsafe for anyone not in a car like bikers, cyclists or pedestrians) and that just leads to a bad quality of life overall for everyone.