I am a breast cancer patient and had undergone 3 chemo theraphy. I wanted to stop is that possible?

My father’s tumor shrunk along with the cancer in the lymph nodes. He just began eating a few foods such as soup and small pieces of bread. Surgery is not an option because the cancer is still in distant lymph nodes. The chemo and radition just shrunk the cancer, but didn’t eliminate it. I was just wondering what a general life expectancy time frame would be.

Now, think about this. I personally know a doctor’s daughter died of breast cancer. A know another man who is the son of a doctor, and his father, the doctor, died with cancer. Think about all of the doctors and nurses and their family members who die with cancer. Don’t you think they would have cured their own family members and associates if they knew how to cure this terrible disease?

We just found out that my mother has lung cancer.
The only thing the doctors can do is chemo treatments.
She has 3days of treatments and 3weeks off. As of right now
she has had 1 three day treatment, and that was over a week ago,
and all she wants to do is sleep. Is this normal with chemo, or is it
the cancer itself?

An answer like 10-60% is too vague and unacceptible? Please include the year, if possible.