Apologies if I have posted this in the incorrect area, I thought this may be the best place for my question

I was wondering when you have, or plan to, stop giving gifts to your nieces and nephews for their birthdays or christmas? Or are you planning on giving them gifts for their whole lives?

My nieces and nephews range in age from 12 to 17. I'm wondering if there's a right time to say, ok, you're a young adult now, no more presents. I'd feel bad doing that, but I'm not sure I want to keep giving them gifts for the rest of their lives either, there are 7 of them, and as you can imagine, the cost of 14 presents each year adds up!

Obviously special birthdays such as 18th's 21st's etc are a completely different story.

Would love to hear other's opinions on this!