I needed something to do after winning the civil war with Rhaegar, which was very tough, but I pulled off as perfect an ending you can expect when things are so random. Elia died of completely natural causes early on in the war, after I murdered Aerys with the help of Little Finger and Varys, I defeated Robert on the field of Combat and sent him to the Wall but also spared his brothers, and when I got to the Tower of Joy I ended up with the best results, since I wasn't married anymore it didn't cause any problems when I made her my queen. (Also Jamie stayed noble and became great, Robert still became a drunk but eventually led the Night's Watch and had a genius bastard daughter, who married Edmure Tully, Tyrion even got to inherit the Westerlands... and Cersei was excommunicated after she murdered him)
And Viserys' kids inspired me. The madman got himself exiled after demanding land several times and then starting a civil war (of course I didn't give Viserys any land!). I ended up with his only son still in my court, so I decided to give him the Stepstones for something to do. Also raise him to be a good man, which actually worked. Though blood tells I suppose, he didn't live long enough to become king of the Stepstones, but after 20 years I let Viserys come back and gave them to him. His grandson and thereafter went increasingly insane, and became Drowned God worshippers (so the Stepstones are STILL full of pirates), but also incredibly badass fighters so they made great generals for my other wars, and despite being kings were never powerful enough to challenge me.
So after all that it became my 'thing' to do over the 300+ years of play.
