My fiance is an atheist, and I an agnostic, so we don't think that getting married in a church is appropriate if you're not practising a religion...
the thing I really don't like about Ireland is that one can only get married in either a Church or a registry office (that new legislation about alternative wedding venues hasn't come into effect yet). So, our only alternative, to an Irish wedding, was to get married in a registry office, which we DEFINATELY DIDN'T want.
We have decided to get married abroad in sunny Florida, outdoors, by the Gulf of Mexico in June. It sure beats being in a registry office! And the family are alot more excited about the whole occasion... for them, it's not just a wedding.. but a holiday too!
Now, if we were forced to get married in Ireland, and given the limitations to where one can get married here, despite my being an agnostic, I'd definately prefer a church wedding to a registry office. I've been to a registry office wedding, and it wasn't my thing. I'd say that's the main reason why non-believers insist on the church wedding...there's no alternative venues. I wonder if that new legislation re wedding venues was brought in, how many people would pick a church wedding then?
-soc