Going grocery shopping, at least for me, used to be fun...

It used to be a relaxing experience, but something happened in the last few years and now it seems more like a headache than anything else. Stores seem to make it impossible for things to be streamlined. Walmart specifically has made it so only certain self-checkouts are open to the public whereas others are exclusive to people who pay a subscription. How does this help the customer and make things streamlined?

To me it feels like stores are making it harder to have an enjoyable experience at the store.

What are your thoughts?