I can't think of one time that I used the Skyward Strike, except for hitting the triforce symbol.
No, I didn't use it that much. It really was a hassle to me. When fighting enemies in any game, I like quick, fluent combat. I hated sticking my arm up in the air for 3 seconds, especially when the Skyward Strike didn't work half the time! ... It was only really helpful, as people have said, for clearing out bokoblins during the descent to the final Ghirahim battle.