Treatment is very individual and works on everyone differently. I wouldn’t go with some kind of automated answer.
I would ask your oncologist to explain exactly why they are recommending chemo. I’d get a second opinion and take it from there. For example, if they say you have a high chance of reoccurrence without chemo or we have evidence that chemo on top of your other treatment gives you a much higher chance of remission, I’d go for it.
I know chemo is the stuff of nightmares but they have ways of mitigating side effects and it’s not forever.