What life span do you play?

I still play on short. It works for me as I've got a short sim attention span. I've found that after focusing skills, career, and children, the adults are usually just becoming adults and here I am wanting to focus on the next generation but not wanting my adult sims to suffer, so I age them into elders (which I find way more fun than the adult stage for some reason and often wish to go from YA to Elder and skip it entirely) So I play with the short life span so that by the time I'm finished skills and careers and aspirations, I'm ready to move on to the next generation naturally. I also use the work/study hard mod on the medium setting one so that they can actually finish their careers before death...because short is a bit too short and normal is a bit too long... but with the mod short is perfect for me and my sim attention deficit issues.