It's just a type of connective tissue that keeps O2 flowing through us. Whats the big deal?
I know some folks get all wigged out by the sight of it:imbar It's a pretty cool substance when you think about it, right? Yeah - it's supposed to be within us, and perhaps its a reflex to be uncomfortable with its sight out of the body, because that could only mean trouble. Make the distinction.
Just think of blood as the medium of life, and know that it is. Try to over-ride the part of you that becomes distressed - I think you will be okay.
Personally, I have no trouble with blood, as long as it is not mine. I have tried to give blood several times over the course of my life. I faint EVERY time. Me-a dude with plenty of blood to spare. When my body detects the loss, it shuts down, even though I am in the care of pro's. It's a wild feeling. I get this very warm and comfortable feeling, then I hear this beautiful trumpet start to play as I lose consciousness. It abruptly ends with the nurse slapping my face telling me to wake up. I can't give blood.
I have mentioned before that what makes me uneasy is when someone starts coughing and wheezing openly. I guess the microbiology class really made an impression on me when it came to spewing droplets into the air from your lungs. I keep thining I am gonna breath in someone else's virus from hell