> when it shows up, i plan to either do nothing therapeutic (chemo, removal)
> donate my body to some team of researchers who need a living model to test their ideas on.
I have a cousin who has been diagnosed with terminal cancer and, like everyone, have lost various other relatives and friends to cancer over the years.
One thing which is very clear from their experience is that all cancer treatment is experimentation on living people, with a hope that some combination of treatments will bring a cure. For some people there is a brief success (reduced tumor size, sometimes to undetectable levels) but, outside of some cancers which are very treatable, this is normally a brief pause.
Treatments people receive today are because of the experiences of people in the past which showed a good response and this is fed into developing and fine-tuning what is done today. The hope is this experimentation will mean more success in future and longer lives with better quality.
There are lots of anger filled comments (understandably so) here. The reality is you are best to receive the experimentation early on when it can bring benefits, but to also recognize it's not always going to benefit you for long and the benefit may go to someone a few years from now who have a better treatment and better results because of your experiences.
I think that's really the only positive thing you can take from the experience.
If you ever do get diagnosed, the bucket list thing is good. That's what I'm doing with my cousin while she has time. There is only a brief interval to tick that off; take it before it's too late.