So that you can gain an understanding of it, with understanding comes rational thinking, and considered rational thinking is the basis of wise decisions.
Almost all wise decisions involve the incorporation of positive elements of conflicting sides, seeking harmony and symbiosis.
If I am a Muslim who accepts that my religion has flaws, and that the same is true for all religions, and every individual could see the same thing, they would not be so quick to condemn and persecute.
Through acceptance, we learn more about others, about the world around us, and most importantly, about ourselves.
Understanding yourself is the most liberating experience, simply because it cuts through all the fetters placed on you by others. Allowing you to work on those you use to bind yourself.
Accept it, so you can understand it, so you can use it.