I would love this feature if they actually incorporated my SMS history into Hangouts, but unfortunately I can't move or sync messages across phones or view them

I would love this feature if they actually incorporated my SMS history into Hangouts, but unfortunately I can't move or sync messages across phones or view them on my computer. I suppose they reason that it would be too confusing to the people who would then try to SMS from their computer, as iPhone+Mac users are able to do so... but isn't segmenting my Hangouts history just as confusing?