For myself when everything is stable I get the sense of well being, hard to describe but kinda like being on top of the world in regards to health. Mind you I can tell when my estro is out of whack, fuckin wanna cry during commercials.
All in all if your doing the cycle properly and keeping levels stable and at proper levels there is no better feeling when you hit like week 7-8 your on cloud 9. Plus the increase in libido keeps the insatiable wife happy and happy wife = happy life