I started last year. I've been three times so far - or is it four?
The worst part is filling in the tick box form and that takes about 30 seconds.
The whole thing is dead easy and the bit where the needle goes in hurts for about a millionth of a second so I think most people can cope with that. I've got to admit that I don't like watching the needle go in, but it's ok, they don't make you.
I was a bit disappointed with the lack of lightheadedness, as I was hoping it might make me feel a bit off me tits and give me a good excuse not to do much work, but unfortunately I felt fine.
The best bit though is that you get a free cup of tea and a Kit Kat, although the confectionary you get probably depends on where you go. I go to the main one on Vaughan way, and you get a mini packet of Crawfords shortbread at the very least.
You also get a smart membershipcard, and different coloured ones after you've given blood so many times. What more incentive could you require? Oh, and you might save some people's lives and stuff like that