No, am not saying that it is useless, infact i think it is important, but how ? just asking your guess upon this.
Whatever you do to gain these experiences, is good. But these experiences are valuable in this problematic world, if there would have been no problematic world than there would have been no need of gaining these experiences. The need of gaining these experiences arrieses after this world was created, insted of before this world was created.
(This was my first answer to your post that I quoted in my above post. Just in case this was what you were asking for, rather than how does the creator benefit from our existence, I'm posting it, too.)
I think the purpose of the creator creating other beings is -- to have company -- or stated another way, as method for a continual expansion of the Creator's love.
I think that as spiritual beings having a physical experience, we are like the creator in many ways (but not as a replacement of the creator) hence the commonly used expression, Children of God.
There are many things that we get to create -- but the fundamental existence of things like elements and a basic level of reality is not our domain for creation. We get to shape what is here and we get
to create contexts for interacting with what is.
We create contexts within ourselves in our interaction with life, and we create contexts in the process of communicating and interacting with others.
Problems are the classroom assignments of life (I used math class in my first response). It's up to us to find good solutions, and we ought to be able to do it because for the most part we often created the problem in the first place. Good solutions to life's problems creates more, and a better quality of, harmony within and among creation.