Deletion is the best kind of turnover.
Doing reps is the second best.
Deleting while you do reps gives you the best of both worlds. 一石二鳥 (one stone, two bird), if you will.
An SRS deck that doesn’t get cards deleted is like a house that doesn’t get the trash taken out. It doesn’t matter how nice the furniture is — how nice the stuff you add is. Sooner or later, if you don’t take out the trash, the trash takes over. And then it’s all trash. When trash is not removed, everything becomes trash.
A clean house is one where there is a frequent motion of trash in the general direction of out.
No matter how good the food you’re eating is (or isn’t), there have to be waste products that leave your body. You can’t hold that…stuff…in. It’s not good for you. Waste products — bad cards — are a natural results of the “metabolic” process of SRSing.
Delete. For happiness, for hygiene, for the smell, for sanity, for fun. Declutter. Delete.
Yes. Kanji, too. Delete.