I have loved social theory since I started reading it in high school because it reveals something of the underlying structure of reality - the reasons behind the human world that we see on the surface.
And when talking about social theory, I often run across someone who dismisses the whole project because "reality is more complex than that."
But the same is true of a map. A map simplifies, but shows the relations of the main elements. A map that showed everything in its true proportions, in a 1"=1" scale, would be more accurate than any simpler map.
But it would be useless.
The alternative to social theory is not a completely complex picture of society. The alternative to the simplifications of social theory is to argue that reality has no underlying structure at all.