Hi Hyde,
I was 60 when I had my SCT. I was told that the decision as to whether you are offered SCT is sometimes age-related, so if you decide to not have it now, and you wait until you feel you need it, then you might not be offered it then. best to speak to your medical team about the consequences of not having it now.
I know it is an uncomfortable time, with an unwanted lengthy stay in hospital, but I have now been cancer free for over 3 and a half years, and if I needed it again, and was offered it, I would accept it without question, as without it in the first place, my cancer was so advanced that I am convinced I would not be here now.
It is of course your choice, and your decision would be respected.
Regards, Tony