I think you're right, it does seem like a cultural thing. If you find something that's easy for you, you can choose to either stick with that one thing, or you

I think you're right, it does seem like a cultural thing. If you find something that's easy for you, you can choose to either stick with that one thing, or you can push your comfort zone and grow. Most americans these days are trained early on to stay in their comfort zone rather than growing, and it's getting ingrained into them.