is anyone NOT an organ donor? and why?

i decided to be an organ donor without second thought, really, just seemed like the right thing to do when asked. now that i think of it it really makes me feel VERY uncomfortable and i know that sounds so awful and selfish, why should i feel uncomfortable about saving lives but i don’t know what it is....

anyways, is it just me? would i be a horrible person to unregister as an organ donor simply because i feel ‘weird’ about it?

edit: i guess as long as it weren’t my eyes or face, i wouldn’t feel as weird about it....i think that’s very uncommon though