Forgive the virtue signalling but this is an interesting observation.
Since the beginning of the lockdown, I have found it increasingly difficult to spend money on stuff I don’t need. It’s not that I normally spend a lot on luxuries as I don’t have much of an income. But I would occasionally buy a record or an item of clothing that wasn’t really necessary. Now, I just can’t be bothered. It’s not in any way a moral decision on my part. It’s just that a lot of things just don’t seem essential anymore. The one exception to this is food. We have been buying much better quality groceries than we normally do as we are not spending out on fuel and entertainment.