Characters are not a problem at all. They can be learned in a week or two. For me, Spanish is much easier to learn - I can read it without a problem, even if I don't know Spanish at all. I can take text of an unknown song in Spanish and then start to sing it immediately. In contrast, I struggle to pronounce English words even today, after 32 years of learning English as programmer. English poetry can damage my brain.

I think that's good logic about suitability, but it shouldn't mean it's universally the only language that programming languages use. By the same logic, I think an argument could be made for Japanese. Or Korean!