Fiction, pffffffffft. Reading one fictional book once in a while is good, but otherwise read something useful instead.
Most of my reading is for entertainment, but he asked for the last three, and they were the last three I finished (all within last month). My "entertainment" books I usually finish quickly while my "educational" (most are not related to my studies actually), I usually read over long periods of time. For example, I've been reading Machiavelli "The Prince" on and off for the last year. I've read the whole thing, but since I do it in intervals I keep rereading different sections, jumping back and forth in it.
That being said, you should listen to what Butan said. Many fictional books (and I would say, all
great fiction) shows/reflects problems/situations we have in the real world, but takes away a lot of bias and stigma. They are basically used as thought experiments.
Take R.A. Salvators Drizzt series and it's take on racism.
Although I do love meself a nice history book or autobiography.