I let my 8 year old play TS4 without mods. She gets more enjoyment out of it than I do. IMO the "teen" rating doesn't stand with this iteration. Eveything is drastically dumbed down. Nothing happens without you making it so, sometimes sims don't even go through with actions you've told them to do. Go empty your bladder, no, I think I'm going to go take a nap instead. However if they went back to their roots I'd agree with the teen rating. My daughter has asked to play two that's a heavy nope wait till your 13 then ask.
