The only reason for an exercise to be in your program is the benefit you get from doing it.
Getting clear on what you’re trying to achieve with each exercise opens the door to variety.
Because there rarely is just one specific exercise that gives you the benefits you’re looking to get.
Sure, there might be some that are more effective or more efficient at getting those benefits.
But unless you’re a robot, or a high-level athlete who needs to maximise every last detail, it’s nice to have a bit of variety.
Especially if you need it to keep showing up.