the question of godparents

do you have godparents? do your children? the question of godparents has sparked a bit of a friendly debate between stijn and i. i grew up without them, he grew up with them. it's customary in his family and from what i can gather in belgium (maybe even europe) to name godparents for your children. i'm not sure if anyone in my family has them.
traditionally, godparents were named for religious purposes. they would be informally responsible for ensuring the child's religious education was carried out, and for caring for the child should he/she be orphaned. other sources show that godparents were named to be the sponsors of a child's baptism. being that neither stijn nor i are religious and that if our child were to be baptized it would be by choice, naming godparents for these traditional purposes seems extraneous. i realize that modern families naming people for this role in their child's life have other reasons for doing so and i am just curious what they are. so if you yourself have godparents or have named them for your children or plan to in the future, could you let me know why and what their role is?