Patti,
You and I had talked about this topic briefly not too long ago and I stand by what I said. You've been such a beacon of strength and hope for Nick. You've been open and honest with him and demonstrated that even in the face of this beast called cancer, a person can, and you DO, live your life to its fullest and on YOUR terms, not the disease's.
Of course you will second guess and question your decisions. All of us who are parents do that, it is normal. I'd be more concerned and worried about you if you did not have these thoughts and feelings!
My gut instinct is that Nick has had a wonderful life thus far and that he, AND YOU will continue to do so. Nick has something in his life that many kids do not have. Parents who are there for him, with him and care, genuinely CARE about him and his future.
Patti, you are an amazing lady, and I am so proud of you and how you are dealing with all of this. Keep it up and YOU GO GIRL!
Love and hugs
Chris xo