Don't let your average usage fool you. You do notice the snappiness of downloading a large file and having it take a third to a tenth the time. You rarely manage to fully saturate a gigabit connection, but while downloading isos and software updates in seconds rather than minutes, your Internet stays snappy the whole time.

Yes, your overall usage of gigabit is only a few percent. It's way oversold anyway, so you could never use all of that. It's still way worth it for those short bursts of speed.