Why doesn’t it occur to Wesley to refuse the position of Sheriff? What does this say about his personality

From the text:

So mv father set aside his fledgling law practice and took the badge mv grandfather offered. It would never have occurred to my father to refuse.

There you have it, then, a portrait of my father in those years, a man who tried to turn two ways at once—toward my grandfather, who wanted his son to continue the Havden rule of Mercer County, and toward my mother, who wanted her husband to be merely himself and not a Havden. That was not possible as long as we lived in my grandfather's domain.