It's actually my favorite genre. And, I don't branch out much either. Which means, I have less and less games to play every year
At one time, I liked them for the strategy that was involved. Like the old gold box games, Pools of Radiance, Curse of the Azure Bonds, etc, etc. And, to a lesser extent, jrpg's like final fantasy, dragon quest, Shin Megumi Tensei, and such.
Then, there's always games like Baldur's Gate, Icewind Dale, Planescape Torment, Knights of the Old Republic, and the Might and Magic series.
For the same reason, I like turn based strategy games, whether east or west, like Heroes of Might and Magic, Age of Wonders, Vaklyria Chronicles, Spectral Force, Operation Darkness, and Growlanser.
Now that I'm old though, I like them because I have absolutely 0 hand eye coordination, and they don't require any.
As much as I like fighting games, I totally suck at them, so they don't have any staying power with me, even though I do play them.