I wear my ring on the outside for three reasons. The first is that my engagement ring is too big. My engagement ring is a 5, and my wedding band is a 4.5. The wedding band keeps the engagement ring from falling off (and my ring-tightener already came off, unfortunately, although the rings are much more flush without it.)
The second is that my engagement ring is really wide. Here is it without the wedding band:
By Prema Photographic.
If I have the wedding band behind my engagement ring, it pushes my engagement ring uncomfortably close to my knuckle.
The third is that wearing the wedding band on the outside has always felt right to me. I don't know why. Maybe it's because you get the engagement ring first, then the wedding band, maybe it's because my mom wears her engagement ring on the outside, maybe it's because my engagement ring cost 9x what my wedding band did and if anything gets lost, it had better be the wedding band. I know technically you are "supposed" to wear it on the inside, but I definitely see other unconventional women rocking their bands on the outside. I have concluded there is no "wrong" way to sport your wedding jewelery, including not wearing it at all (which I am not, right now. I forget mine frequently. Since it's too big, I don't wear it when I work out, so I forget it after the gym.)
How do you wear your rings? Do you have multiple rings? Do you wear just a band or just an engagement ring? Or are you rockin' the Wills and not wearing a ring at all?