I seem to average out at buying one to two dolls a year myself, and I have been in this hobby since around 2011ish, so I am nearly at 20 dolls! Most of my crew has a strict "Is this one of your characters?" buying policy so I don't tend to do a lot of impulses these days. It was fun watching the crew grow over time, and refining my tastes. Some dolls and characters have stayed with no plans of moving and some I still can't find the right shell for, but to me these struggles are just apart of the joys of the hobby. I don't really rush things myself, and just sort of let the dolls come to me. It's been fun!