Why Marc keeps coming back to donate

Why did I first donate blood? They came to our school and if you went along you got off work for a while and if you pretended to be a bit faint, you could drag it out even longer! Then after leaving school, my work arranged for buses to take us to donate. I started in 1981/82/83/84, somewhere around there, and I haven't missed many. Up to my 60 odd donations. It's the chocolate biscuits that keep bringing me back. And the coffee. And the wonderful caring staff. My goal is to crack a ton. 100 donations is a decent goal.