I: Introspection
All the time that you either spend on doing chores or just spend waiting while they're making passionate love gives you plenty of time for introspection. That's why good cucks are so respectful and -- for lack of a better word -- zen. You've had plenty of time to ask yourself whether you're man enough to deserve sex, why your dicklet deserves to be in a cage, and to conclude that your hothusband/hotwife deserves a loyal cuck.
Most men would bristle at being locked into chastity, at the humiliation of being relegated to a cuck; they'd cause a scene, storm out -- anything to try to reassert their masculinity. You don't; you take pride in being a locked cuck. You're secure enough in your self-image to not react defensively and lash out when faced with the obvious truth: that you're not man enough to sexually satisfy your partner. Accepting that truth doesn't make you inferior, it makes you self-aware and brave to accept that.
It's true: it's a rare breed of man that accepts this reality stoically and even with pride. All this time for introspection and self-reflection helps with that.