The one thing that I never really grasped in AE was using focus attacks, when to use them and for what purposes. Let me preface this by saying that I main Adon, whose focus attack is alright at best, but clearly not as good as others. Because of this, I rarely even use it and just stick to using my other moves and actually do a bit of zoning with Adon as well. But at the same time, I do like to goof around with other characters like Gouken for fun, who actually has a good focus attack, yet I can't really find a way to use it.
What are the common uses for focus attack other than following up from a stun?