Yea of course it doesn't do shit. I wonder how I'm still here alive today then huh? Yes it can have adverse effects but ultimately there's a possibility survive after it.
I had Radiotherapy also and I've been clear for almost 6 years and my Chemo wasn't even that bad (I guess I was lucky). I was sick on my first dose on the way home in the car, after that I was just a little tired and weak most of the time. Granted I almost died as my body was shutting down as I picked up an illness due to my immune system being down due to treatment but ICU for 3 days sorted that out. That was my only bump in the road really and now I'm cured fingers crossed.
Chemo isn't the problem itself but the after effects of cancer for me are the worst, I won't delve into details but sometimes I don't think it was worth it.