Each to their own, I don't judge others... life's too short to be petty like that.
My DC get 5 main presents under the tree.
They get a small stocking when they wale to open before we get up. Usually things to entertain them from stupid o'clock to a reasonable getting up time. These will be things like a chocolate santa, a magazine to read etc... usually 5 - 8 presents. This is from us.
And a sack from Santa. This usually contains a mix of things they need, luxury treats they like and a few presents. They'll normally get about 15 presents in their sacks. Presents usually includes treats such as a big tub of bubblegum and huge catering box of chocolate cereal (we don't buy this so a real treat!), things they need like new clothes, pjs, dressing gown and slippers etc..., replenishing consumables (this year they've got new sharpie pens etc), things they need for their hobbies or their rooms, and then usually a book, board game, DVD and cd, and up to 3 things they request. So decent presents, but I don't do tat (don't have the space).
So about 25 presents from us, but opening it will be spread over a 6 hour period, so they don't just open and move onto the next thing either.
I also don't do constant giving over the year. So unless essentials, they get most stuff as presents. For example, DD2 wants a pe skort for netball (but doesn't need it) so that will be a present.