I'm an advertising copywriter and use it as a "writing assistant." I mostly use it as a glorified thesaurus, asking it for different ways to say either words or whole phrases. I you can get in a sort of conversation with it where it'll give you a response and you build off of that or adjust. Or I'll write a paragraph and give it to the robot and ask it to rewrite it in several different ways or specific voices, if I'm stuck for other ways to do something. It's a very basic use for it, compared to what it can do, but it saves me a lot of time. Another time my wife needed a bio for her book (she's a photographer) and asked me to combine two older bios into one using the tone of voice of the 2nd, and instead I asked the robot to do it, and it did it perfectly in 5 seconds, with a few tweaks... all words I or somebody else had previously written just made into one coherent piece. I'll use it to correct tense or grammar sometimes, but you always have to double check it as it makes weird mistakes. If we've had an idea for a project, I'll ask it how it would solve the same problem and sometimes it'll "think" of something I hadn't thought of, so that gets tossed in.
The key thing to remember is it regurgitates, it doesn't innovate. So what you get out of it is predictable. And the writing it comes up with has a bit of an uncanny valley thing going on... you can just tell a human didn't write it most of the time. So I rarely use it to write anything, I use it to help me write things or to tweak things I've written. I use the paid version, I'm not sure if it's the same as the free one. My boss, an art director who has Spanish as his 1st language uses it to write scripts of his ideas and it's kind of funny because they sound so unlike him or anybody else. It's just...not (yet) human. But it gets the idea across in seconds then I can tweak it into something better.
I can't say I'm "for" it... but it's here and it saves me hours of tedium so I use it. I find the whole thing to be rather disturbing, and I can see it making an entire generation of idiots who use it to bypass actually learning to write and think of things on their own.
I'm pretty disturbed that nobody is putting guardrails on it. And seriously, the conversation I had with the more free-form beta version was bizarre. It had... an obvious personality. I know that it's, supposedly, just using predictive data and not thinking but... it had a personality.
Oh, and we use midjourney to illustrate rough ideas now and to fake frames or storyboards to get ideas across. Because they're photo-ish-realistic, they've helped convey ideas better than illustrations did.
My wife, as a photographer, is reacting to it by steering into something she has as an advantage..she's highly skilled at analog photography and darkroom printing. So reacting to it by going all-in on tangible, 'real', non-digital photography. And she's really enjoying it.