Given blood thrice

I have donated blood 3 times now at my school. The first two times I was still hesitant because I have had friends with issues with the needles getting into the vein or bruising but my experiences have been perfect. The people are really nice and make me very comfortable every time. They especially enjoy telling the others about my vein because I have a really nice one and they're always cracking jokes and making me smile. I will probably continue to give blood in high school because it seems like they take extra precautions there.