If you don't want to donate blood, don't donate blood. That's your freedom. At present, the country is seriously ischemic, and many blood collectors force blood collection in order to complete their tasks. Originally, we could only donate 200cc for the first time, but the blood collectors forced everyone to donate 400cc, and their attitude was very poor. I saw it once. Your condition doesn't meet the requirements of blood at all, so it won't hurt you. You will also hurt those who suffer from your blood. You can show him if there are some blood donation forms.