Not everyone uses Apotheosis. It may not be relevant for you but it is not the same for other people.
In fact, "at least" 47,5% of the players answering this survey never used it.
I honestly disregarded Apotheosis at first glance too (since Overpower is so broken that I honestly wanted to use my source for that alone), but then again the tooltip doesn't tell you that it actually also increases all of your attributes by 5, something I hadn't noticed until I accidentally clicked the buff icon.
