I think that NOT getting a vaccination is pretty stupid. Taking the risk of losing your life to a microscopic disease is not smart, in my opinion. I think that the vaccinations help a whole bunch.. Especially if you don't want STDs or to die.
I have my own opinions, but whatever. I think they're good, but if you want to roll around in mud all day to prove to me that you don't get diseases, fine by me, that's your loss.