I find very little to like about it. It makes even simple obvious tasks extremely frustrating.

I like that it's widely supported in the browser. Something is better than nothing (arguably). Other than that, no thanks

Function as first class data was pretty great (lambdas) far ahead of other languages used in 1999.

Asynchrony / event loop to get to non-blocking was / is a huge leap.

Like it or no, it’s pretty much English: a polyglot, imprecise, syncretic mish-mash that’s absolutely everywhere. Many arguments against it are some sort of rehash of “But how will they communicate well without learning Latin?!” I love Latin and know Latin, ut the fact that kids in Delhi are rapping (!) in Hinglish suggests that English’s promiscuity is a virtue. Same for JS.