Went for my 1st time blood donation on this glorious day. But strange enough, i didn't really get into any problems after donating the blood. Seems that i am actually more energetic after donating all that blood though.=/
It might be the 'need' to feel gratification to do something good for the people at large, that i did something that random. But actually, it's just to accompany the temp staff who wanted to go there. No harm to donate blood as a way to do something good for other people, i think. Offhand, i don't think donating blood is a bad thing, just that it's too damn inconvenient to go down all the way there to do such a thing.
*update* As a friend of mine have advised me, actually the high which i have experienced, is because of the sudden loss of blood. That my body actually reacted to the loss of blood, and kicked in the 'high' to prevent me from feeling the pain. Maybe it's a relatively healthy way to get a natural 'high'? Think next time round, i'll just check what kind of freebies they are offering, before doing such a thing again. We 'do' live in a materialistic world, unfortunately.