I think that after cancer surgery and with a doctor feeling that all cancer was removed, a majority of Oncologists will still recommend chemo regardless. I get it. There's always that chance that a cancer cell remained. ( * but isn't that the reason we do blood tests and CT Scans ?)
So the patient looks upon chemo as insurance against something bad happening.

In reality, something bad will come to approximately 40% of all colon cancer patients that will see the cancer return in 2 to 3 years after surgery, chemo &/or radiation.
So I could be doing chemo right now immediately after surgeries for a couple of years or so and still see cancer return afterwards.
While I wait to see if cancer returns, I am so far living a normal life free of pain or sickness at this time.
I seriously feel as good as I ever have and no one could guess that I have had two major surgeries in the past 7 months.
I have side stepped chemo in favor of blood testing every 3 months and CT Scans every 4 months. At 7 months thereafter, I'm good so far.

So I am choosing quality of life rather than chemo at this time and until future tests dictate otherwise.
I am at peace with my decision.
Life in itself is a gamble and I'm gambling that some period of time without chemo is better than with.
This is me. Others have to make a decision that is right for them.