i understand that some of this is about ease of movement and stuff like that, but what am i missing in this statement: if a bolt locks down and makes good contact w/ the lugs, it has done its job.

i am reading all the discussion on timed and trued and don't understand what all is important. if i lap in my lugs well so it locks down tight what else needs to happen?. if i don't mind the not perfectly smooth bolt lift and other little things like that, am i really missing out on anything?