Sorry for your loss CF1988. 33 is just too young.
My uncle passed away last month from cancer. Cancer sucks. My mother was diagnosed ~2 years ago, but is now cancer free.
Personally, I have a lot of opinions to causes of cancer and lots of people have lots of opinions on them. The only thing I will say to that is, a lot of people will say "well its scientifically proven that it does not cause cancer" - I would say beware, to empirically understand the long term of these affects (and to get direct linkage) is incredibly hard, esp if you want to publish this, and how the experiments are done. And experiments et al to try to prove this stuff is very tricky - so just cause it hasn't been proven yet, does not mean its going to be ok. Personally, my wife is a researcher in the field (cell differentiation in systems biology) ... I personally believe in 50 years time, it will be alarming how many things we do to cause hard to our bodies, and we're going to ask ourselves "how could we be so god damn stupid" ...