Do you enjoy "LONG" lifespan?

I use long lifespan and really enjoy it. But what I do is age up the Sims when I feel like I'm ready to move on to the next stage -- for toddlers it's when they hit either level 3 or 5 on the skills (depending on which reward traits I want), for children when they've finished at least two aspirations, and teens when they've either finished an aspiration or gotten as far as they can without being an adult (I try not to pick the aspirations that require adulthood for my teens). Often the teen aspiration will depend on what I've got planned for their career, so future painters get the painting aspiration, future athletes get the athletic one, etc. -- that way they've got skills for their future career. YAs and up normally get pretty well into their age stages before I age them up.

I also have the settings for townies to age up normally but for played households only the current household, but I'm currently playing with aging off because I'm making a Sim to run a photo studio and art gallery, so I'm working on those skills -- I'm also doing the City Native aspiration because I've never finished that one and it takes a while because of having to do stuff at all the festivals and with Seasons I never know if one's going to be rained out. I may end up having to cheat money for him to build the gallery/studio when he gets to that point, then I'll leave him in my played households but not touch him so he'll live forever and the gallery will be open for my other Sims to visit. May do the same thing to build a clothing shop in DSV or maybe just cheat that Sim the necessary skills and money (I'd like to have access to all the new outfits that came with the Stylist career so maybe I'll just download a Sim from the Gallery that has them.)