So pleased to read your news Ruby. I did not realise FAP < Dodgy Science Alert - Familial something beginning with A, Polypythingy> put you at risk of other tumours or that there were degrees but important thing is that you know and if caught early like you (even if not as early as it should have been) then the outlook is really good. Friends son has already had polyps as a barely teenager so it looks as though he has the gene but is very closely monitored and it is regarded as an inconvenience rather than life threatening.
kitkat and Foo I also was stressed juggling a big job, young children and not very supportive DP when diagnosed, also not overweight and as my oncy put it had done everything, diet, exercise, breastfeeding, right. However I don't think that we can go back and examine the whys and what ifs, I know plenty of other women in the same situation who have not developed Cancer and we risk Daily Mail territory. With all due respect to your BCN most of my working friends re-evaluated their lives when their children started to develop a need for quality of parenting rather than quantity. Little ones need love and stimulation but an 11 year old has started to need you to be the one to help with the homework and the friendship crises etc. (and to impose the boundaries) and many of my friends changed their lifestyle in response. Probably why you get all those regulars in the Education threads!! Many were senior managers, partners etc but now not one has kept up that frenetic pace. I think Cancer is often the warning bell that prompts you to do something you might do anyway.
I had no choice as my illness was prior to the disability acts covering Cancer and I ended up in a constructive dismissal case but it has given me time to spend with the girls, one of whom has Learning Difficulties that have involved me in a lot of intensive support. That actually kicked off whilst I was having chemo and I had to get involved in a serious intervention to bring her reading, spelling and writing up to speed which didn't relent even in my bad weeks! I am pretty sure I would have realised that I couldn't carry on as I was even without Cancer. However I miss work and now Little pigeons is on the verge of uni and DP is driving me up the wall at home I think that my PhD and being a pain the neck for the local council (We are in the Daily Telegraph today gigs) etc I sense is not going to be enough and I do wish I still had irons in the marketing and strategy fire..... Twelve years on I don't think I would be as stressed out if I went back to my job now.
Which is a long winded way of saying that you should change your life if you want to, and there are good reasons to, but not because of Cancer.
And do keep up the gym membership, I had a rough ride with chemo but making it to exercise class (and the swimming pool), even if all I could cope with was Yoga, was a real morale boost in my good weeks.
Betsy Your post made me laugh too, a valiant effort and I am lost in admiration with anyone who can keep up with the thread at the moment, it is beyond my brain!!
I have a good excuse for not being on today, gigs and I had another long chinwag and have lots of exciting outings planned with her blue badge 
Waves to everyone