As Alatar notes, hobby, there's always the Preview button. Which I am guilty of not using nearly as much as I should, to be honest.
I sometimes use it, when I'm posting in a difficult discussion and I want to make sure that I'm not saying anything offensive (if possible
) before someone sees it - you get more of an overview in Preview than in the reply window.
Normally I re-read my post in the reply window.
Still, I edit most posts, I think, usually the second after posting - there are always afterthoughts, a word seemingly not saying what I thought it said when seen in the finished post.
Yes, preview might prevent a few edits, but by far not all.
Most of my edits are additions. I post, and find that someone has posted while I was typing, so I want to add something with reference to the new input.
I don't like to make several posts in a row. Making separate posts to answer different people, that's spamming, I think.
I've been guilty of making several posts in a row, too, of course, but mostly only when I felt I had to in order to make the new point comprehensible or noticeable at all.
This goes especially for business forum discussions! I take a long time writing these, so people post in between. When the discussion is very quick, I sometimes give up and make a new post, rather than edit, not caring whether it results in two posts in a row.
Compare above, though: I wanted to comment on Fixer but forgot, but it would have been spamming, IMO, to make a new post for that comment.
(Edit: half a sentence in the last paragraph of this post has been edited, too, for clarity - I found that my first version didn't say what I thought it should say - I don't think I could post without editing.)
And now I'm even editing after Prim posted!
I noticed that I got something wrong, and that would cause confusion if I couldn't edit - I'd have to make another post explaining.