I actually understand the question you are asking as I certainly see the effects of this in my situation. I did an extended stretch of w30(100 days) then transitioned to 99% compliant. Did great, loved it and felt like I could live like this forever. Still do. However, 2014 was not a good one and I was not able,for many reasons, to stay compliant. I still am shocked at how fast I gained all the weight back and how fast I bloat after I eat grains and sugar even today.
I love this plan, and plan to stay this clean eating. I found out that before w30,I could lose weight traditionally, slowly. I now can't lose anything,I actually gain, if I have any grain,sugar at all!
So, like the others, you have to decide if it is worth it. The Mexican meal I had on Friday so not worth it(I did not want to go but got outvoted).
So,I am back to 95% compliant as I don't wish to do strict anymore.....been there,done that.
It has changed(brought to my awareness) my ability to tolerate processed foods. Does that suck??? Yes!!!! Before, I didn't gain 5 pounds of water after 1 non compliant meal. Now it does. And that weight takes 1-2 weeks to remove. PITA.
So I spend lots of time considering what I eat and planning a lot.
I am getting back to the idea that I am worth it. Daily struggle.