But why shouldn't people ask for what they want in their wedding invitation, curlymama?
Because in this culture, it's considered rude! Surely you can see that from the amound of replies on this thread alone that lots of people find it offensive. People that are generous, and want to give a wedding gift that will be appreciated, still find it rude. Why is it so hard for people to see that??
On the average guest list of say, 80 people, at a traditional English/British wedding, there is bound to be at least one relative or friend that finds it rude. So why would anyone want to do that to their guests?
The reason that people get offended by requests for money is that they cannot give what they choose. Anything less than £40 - £50 can look a bit tight, but you could get a gorgeous gift for less than that in a sale, that would actually be worth more. Some people enjoy personalising their gifts and putting though into them, and requests for money are like saying 'we don't really care about you thinking about us, we just want to spend your cash'. It makes it feel like a gift is expected. And when you take into account how much it costs to attend some weddings with outfits, transport, accommodation, it can make a guest feel like the couple do not appreciate the effort that has gone into being there to celebrate at all.
As has already been pointed out, if you have no request or gift list, lots of people will give money anyway. People want to give because they want to give, not because they have been asked to.
FWIW, we had a gift list, we just told people that asked that they could type our names into the JL website and see what we would like if they needed ideas. And of course, there were lots of gifts on there for less than a tenner. Those that didn't want to do it that way still gave money, and we were genuinely astounded at how much some people gave. It was lovely to feel the benefit of some peoples generosity, because they had chosen to do it. As the bride and groom, it wouldn't have felt anywhere near as lovely if we has asked for that money, as it would have felt like our guests had presure on them to give, whether they wanted to or not.
And I wish people would stop banging on about what is done in other countries/cultures. In other countries where it is traditional to give money, you don't have to ask. Maybe people from those countries would find it offensive for a couple to go around telling their guests that they had a list somewhere because it's not the accepted done thing, and that would be their personal perogative.