I've brought my DS up to buy cards and go and buy presents, wrap them etc. He now, at 18 hasn't, I don't think, bothered to buy me a card and the present was a click on Amazon, bought the latest Paul O'Grady book which I had just shown him on my laptop and will probably not wrap it neither. It does seem that it is implanted in them, regardless of the way they were brough up. 
Saying that, his dad, my ex husband used to go out looking for my present for a whole afternoon and then another afternoon going buying it, so they are not all the same. However, he did get a bit obsessed with dishwashing, washing, ironing and cleaning. I divorced him as I thought I'd turned gay! 