We do have a lot of choices these days.
I know many authors are choosing to publish themselves on Kindle. Unfortunately, some haven't done the final editing and polishing--and others aren't even at the stage where they should be published.
I don't know about anyone else, but I went through many stages of learning about writing: First I was a voracious reader, so I knew what books were supposed to look and read like.
I subscribed to Writers Digest and read it from cover to cover.
I read many books on writing and publishing.
I went to writer's conferences.
And all the time I was writing and submitting.
I learned the most about writing from the critique group I joined in 1981 and still belong to.
Despite all that, I'm quite happy to have a publisher who takes care of the formatting, designing the cover, etc. etc.
That's my choice.