I'm curious, then what makes you hate Emacs?
Emacs doesn't play super well with others. You can do a lot of things in emacs, but you can't do emacs in other things.
On the occasions that I'm writing Java, I find IntelliJ to be super awesome. But I get annoyed because the editor in IntelliJ is not emacs. I'd like to be able to do things I can do in emacs in IntelliJ. Realistically, that means replacing the IntelliJ editor with emacs, but at the moment that isn't really possible.
Some things you can use emacs for, like editing web forms (I used to do that with an extension in Firefox), but emacs is really not so great at being used in other programs.
As far as emacs itself, the somewhat crappy GUI rendering precludes creating an IntelliJ like experience.
Instead, everyone almost always finds their own way of rendering the text editor portion of what they are doing. Consider, your concern could just as easily be shifted to complaining about IntelliJ. Why can't I easily call out to it to get the information it knows?
And this is largely up to each person. I personally loathe the IDEA GUI. And most any GUI. I will grant that they do better screenshots, but I will take what is effectively a super powerful terminal buffer any day.
It doesn't change your point at all, but I simply have a different opinion and was asked about it. I don't really care about embedding intellij, I just want to use emacs in other things.
I do feel it is a rather personal choice. As I said, I don't care for the IDEA GUI, but I understand others do.