Id say the gym isnt a bad example. If I’ve been regularly and sunk that time and cost into improving my fitness, not going and sitting on the lounge eating pizza doesnt just take away from the future it also invalidates the efforts in the past (annoyingly frigging quickly too) making the “sunk cost” a loss that I might not want to lose and give me motivation.
Id say the gym isnt a bad example. If I’ve been regularly and sunk that time and cost into improving my fitness, not going and sitting on the lounge eating pizza doesnt just take away from the future it also invalidates the efforts in the past (annoyingly frigging quickly too) making the “sunk cost” a loss that I might not want to lose and give me motivation.