>> Confluence is great for writing documents
>... it's essentially write-only
Seems like there's no disagreement here :)
Anyway, as I see it, as someone who has written quite enough if it, most software documentation is write-only 99% of the time; but it is occasionally very handy to have that documentation written by the original developers when shit really hits the fan.
Citation needed. I use it almost daily and it's essentially write-only and pretty unusably so at that.