Yes I agree, my hubby hasn't had chemo yet and he has had mets for six and a half years. He's just had zoladex and later on, dyethylstillbestroll, both did. Sterling job at keeping the cancer from progressing until now and even now, we are starting radium 223 treatment rather than chemo (due to infection risk). Don't despair, if the oncologist has ruled out chemo it will be in your dad's best interests but do get a second opinion if you need it. By the way, he might be wanting to see how effective HT is, it is a remarkable treatment on its own.
Devonmaid