How Do You Manage Your Population?

I have MCC but I don't use it for story progression. It tends to pair couples I don't want paired up, divorces families I want together, etc. I usually do marriages and grow my background non-played households in CAS. I age them up as they're kids age up. I also play with aging off, so if I have too many elder sims running around, Death by too much woohoo comes in handy lol. Its how I'd wanna go Lol! XD
Generally though my sims are so clutzy they manage to die off all on their own before they ever reach their elder years