Being stateless means that you are not allowed to reside anywhere without permission. While there are some drawbacks to having citizenship (depending on the country), there are no countries where it is worth your while to withdraw citizenship without having another to fall back on. All of the legal rights that most people take for granted disappear when you are not a citizen. And if you are arrested for any reason (or even no reason), nobody will come to your aide if you are stateless.

Having lived a good percentage of my adult life in countries where I do not have citizenship, it's something that I keep in mind -- I do not have the rights of a citizen. I only live here as a guest on the good graces of my host. Only international agreements with the country that I come from guarantees any due process of law in the case that there is trouble.

Having said that, I completely agree with you: it would be wonderful if countries would guarantee rights of people no matter their origin or political affiliations. We don't live in that kind of world, unfortunately.