no sometimes what I do is write my post in my writing program first. then wait a bit and if I still feel i want to make that post I copy paste it in the spot for making a post here.
maybe you can do that too. all computers that have microsoft windows of all versions also have note pad and microsoft office. there are other writing programs too. maybe try writing your post in them , then wait a bit and then go back to it. if you still want to post it, its easy to do, just right click copy and paste.
that way if it bothers you that you post then delete, this way you can post and not delete because you will have had a chance to think about what you want to post before actually posting.