I’m not saying they’re fancy, just that there are more people on the planet that can’t speak English than people who can.

Also, most people on the planet speak multiple languages. There are even less people on the world that only speak a single language than there are English speakers. So, if anything, speaking just a single language, even if it’s English, is the abnormal thing.

Lastly, it’s not about “feeling successful”, as you put it, but about being able to communicate with more people and being able to enjoy more things.