A classic dick of Theseus dilemma.
This is why I donate blood
This is why I donate sperm.
Fake: op having a gf and the money for medical care Gay: thinking about someone elses blood in his dick
How does one run low on blood?
For me, massive amounts of blood loss.
Anemia
Slips, spills, and forgetting where you left it over night to discover taste funny the next day.
Hormone imbalance after a major infection or illness can cause it. Source: Me, i starve my heart of blood if I stand up too quickly.
I'm O- Neo. My blood is given to babies, so no such 'luck'.
Eww, why are you inside a baby?
Huh, small rabbit hole there, wasn't aware there was a special baby blood type. So basically someone who has the luck to have dodged what sounds like a super common virus all their life gets to have special uses for their donations.
https://www.mayoclinic.org/diseases-conditions/cmv/symptoms-causes/syc-20355358
This someone else might have saved your health. You could be thankful.
