Most people do not. And these days, blood can be dangerous. Medical professionals and those in sports are concerned about getting other people's blood on them.
Many people still begin to feel queasy at just the sight of blood especially their own.
Blood is important to us. Without it, our bodies could not function. God made blood the most important part of His plan to save and cleanse men. Everyone has sinned. Every one of us has taken his own way and rejected God.