Never cleaned out any old saves, so this is with all those, my expansions and store content (no third party CC at all): 34.7 GB!
I'd clear the old data, but... sometimes I want to go back and actually grab
those Sims, at
that stage of their lives, or when they lived in
that house for whatever reason.
I do recall one Sim who I played so badly (as in morally - he did bad things and messed up people's lives) that I couldn't stand to play him anymore, so he's gone.
I probably can afford to do some culling, however.