I never, and I do mean NEVER play with aging on. I almost exclusively rotationally play so I'm always moving between families and I'm a big control freak and want everything to happen on my time lol. I don't even let the townies around me age or move on with their life without my say so lol. This is though why when I complete my story I never touch them again lol. I've actually been trying to talk myself into doing an actual playthrough of parents to children to grandchildren and just playing on long life or something but every time I try I get invested and shut off the aging.