Actually the cure rate for leukemia with chemo is rather high and they cure more leukemia than any other cancer.. You must weigh your situation carefully. Much will depend on what type of leukemia you have. Bone marrow transplants are often effective, but with all treatments there is no guarantee.
Some leukemia types are more like a long term chronic disease. I have a friend who has had it over 10 years and she is doing well. She won't do mms for she fears rocking the boat as she is quite stable with it. .... if it were me I'd do the mms.