>But isn't there also the possibility that the majority of people would just feed their pleasure side all day long? Without any constraints, maybe we would just consume, have fun and go to the beach all day long?

And why not? Is there some ethical imperative that says you should not "have fun and go to the beach all day long", if you have what you need to go by?

I'd extend Pascal's praise of idleness: ""All human evil comes from a single cause, man's inability to sit still in a room." -- to including "go to the beach" and such along with sitting still in a room.

The point (and I think Pascal's point) is not doing nothing, but in being able to be content without having to create schemes and busywork when there's no need for any, but instead find satisfaction to being itself.