For Simmers who are bored and not bored, do you play on rotation or one family per save?

I play rotationally and I believe the only reason I'm not bored at the moment is because I've tried something new where I add "filler" families. I have 8 families I rotate with Sun-Sun Sim days, but if I feel like the family I am currently on is a bit stale, or not too interesting on that particular rotation I just hop into a "filler" family and build them up some. I may even flip between my main family and the "filler" family during the week multiple times to keep things interesting.