joelallie,
you assume a lot about families and family weddings. for some people the idea of having an enormous wedding with everyone staring at them makes their stomach flip with fear. me, for example. i love my brother and sisters, none of whom yet have children, but i barely know my cousins and many of their kids are older than i am.
my husband is an only child and doesn't really get on well with his mum so only she and his gran were invited to our wedding (and a couple of friends of hers so she wouldn't get lonely).
we could not bear the idea of having to get into all this 'who to invite, who to offend' bullshit so we did the right thing for us and kept it small, didn't invite anyone with kids (apart from one three-year-old who was spoiled rotten the whole time) and did it abroad.
it was precisely to avoid people telling us what our wedding should be about, what it should mean and who should go that we could not bear to have a large wedding.
In fact, we did offend a couple of people because we didn't ask them (we were limited to 30 people including bridal party) and we did apologise to those we offended. One couple were disappointed but understood as they were in the process of organising their own wedding and got that 'if you invite x you have to invite y' and how it can all get out of hand, numbers-wise.
Another person, however, who throroughly disapproves of marriage (thinks it makes women 'chattel') and who had a 12-month-old at the time, fell out with me over it. (she's also the person who brought her son and chastised the bride for letting her new husband's cousins kids supposedly bully him in my previous post). clearly she is a towering arsehole, but it did upset me that we fell out over it as it makes things difficult even now.
but it does irritate me to hear about what a wedding should be and what it should mean. everybody's different, and so long as they are polite about it (and reasonable about small babies) then i don't really see whose business it is apart from the bride and groom. if you don't like it, don't go. Don't be rude about it, just say that you are going somewhere else on that day and you hope everyone will have a lovely time.