I think that's part of the 'bonus' of getting married older - there is a definite correlation (at least on here) of age and number of guests.
As you get older I think you just start to realise that 'hey it's OUR wedding, we want people there that REALLY mean something to us, so we'll restrict the numbers to show that', or something like that.
I've realised it on here - the younger couples seem to be looking at numbers of 100-plus, and wouldn't dream of not inviting the entire church and all extended family; those slightly older (ie. upwards of 25) are wanting absolute maximums of 50...
That's probably the difference between you and MN John, Reverie - with your age you will probably find it much harder to stake your independance in regards to your wedding.
Not really fair, but understandable...
Sasch