My husband and I both wear our rings nearly all the time. We only take them off if we are doing something which might damage them. We both feel very strongly that our wedding rings symbolize our vows and commitment to each other, and would be unhappy and offended if the other decided to simply stop wearing their ring. Of course that's just our thing, and we realize that others may not feel that way, so we don't judge those who don't wear their wedding bands. That's their business.
I am personally quite touched by my husband's attachment to his wedding band. He has to take it off occasionally in his job in the oilfield, so a couple of times he's thought he lost it, and was absolutely distraught - literally turning the house and his truck upside down searching frantically for it. And, I mean it's a nice ring but it's certainly not irreplaceable - at least not to me. Sure I'd be dissappointed if he lost it, but it's not like we couldn't get him another one. So it's sweet to me that he's so emotionally attached to it.
We both have had very bad marriages including unfaithful spouses, so we really cherish each other and our marriage and feel very protective of it. That probably has something to do with our attachment to our wedding rings.