If I’m leaving my phone/keys/purse in it, absolutely.

If I’m just leaving clothes? Nah.

I don’t lock my things at my local yoga studio, which is small and closeknit. I’ve never heard of anything getting stolen over the 10 years I’ve been going there and when they first opened the lockers were really problematic. They’ve since been replaced but I’m not in the habit of using them. I only see newcomers using them. It would be very easy for someone to steal something. I do use a lock at the pool and my work gym, where lots of strangers have access to everything.