The main reason I switched to cloth with DD2 was the nasty chemicals found in sposies.
I didn't want anything next to my bubs skin which has been linked to toxic shock syndrome, possible infertility and many other horrible things.
Once I educated myself about what was actually in them there was no way in good conscious I could use them.
I just wouldn't take that risk, no matter how small, when there is a valid alternative.

I had alot of issues with DD1 and sposies, almost constant nappy rash which would bleed and break her skin. I am kicking myself now that I didn't educate myself sooner, I could have saved her alot of pain. I have not had one serious bout of nappy rash with DD2, except some redness when she must have pooped over night and I didn't notice.

As an added bonus they are cheaper and better for the environment, but they were not my main incentives. '