Why would or wouldn't you donate blood at a blood drive?!

Why would or wouldn't you donate blood at a blood drive?

I'm all about donating blood. It's one thing you can do to help people that only takes 15 minutes of your time. There is always a shortage of blood. I mean, the small price topay is that you feel tired for a few hours. But what the heck, you sleep better that day too. Your body produces new blood cells and blood. It's like an oil change for your body. You get the yummi snacks at the end of the day too. Also, they check your blood for any diseases and pathogens so its like mini medical exam without the copay or the wait. I hope to reach 100 donations in my life.