It's amazing so many people are able to use English as a second language.

You must resent every single natural human language then, since all of them show the exact same kinds of irregularities, for the most part.

And, if we all did decide to use Esperanto because it's regular (and therefore artificial), irregularities would inevitably be introduced within a single generation, because the nature of human language is to change, and that change will always result in irregularity.

You're correct, but try to see it as permission to speak English your own way rather than getting frustrated attempting to speak "correct" English, a fiction which has never existed despite the efforts of generations of stuffy English teachers. There's been "English as spoken by the privileged class" but it's no more correct than any other version and breaks as many of its own rules as any other patois or dialect.

Also has millions of people ready to correct your pronunciation of a word that is written completely randomly compared to how it's spoken.

That has a lot to do with it being a Germanic language that borrows a huge amount of words from a Romance language (specifically French). So sometimes the rules resemble German, sometimes the rules resemble French, and the rest of the time is all about how it branched in a different direction than German did.