I can imagine, Lelan! I have heard motorcycle riding is like nothing else. There are a bunch of motorcycle groups that we see together on weekends and I'm amazed at the variety of bikes that they have. They always look quite content!
One thing that I don't mind admitting is my penchant and hankering for my SIMS. But what has always interested me the most is the from scratch building and decorating of their houses/buildings. I have probably built every type and category of housing and business for them. Tree houses, beach huts, castles, cabins, bubble houses etc. And after I'm done building, I will play my character (money cheat, of course) for a while, get bored with that and go back to building! I consider it a 'guilty pleasure' because I purposely stop myself from playing until I know I will have a good chunk of time...which isn't nearly as often as I would like
As far as a more left brain activity...nothing comes to mind yet!!