No dont feel bad, christmas isnt about how many presents you get its about spending time with family.
weve had a rough couple of years and dsc got a few token gifts plus pj's, socks etc, my dp felt bad the first year as their mum is a great beliver in big extravagant gifts even if she does have to get into debt to pay for them, he soon realised that the children didnt care they much prefered the fact that dp spends time with them unlike their mum who sends them off with their new laptops so she doesnt have to bother with them (dsd's words not mine)
this year we are slightly better off and have been able to spend a little more but they still dont have great big piles.
Dss 11yrs - a bike ( bought in the sale and with extra money knocked off because its ex display), a skylander annual, bike helmet, selection box and stocking.
Dsd 16yrs - samsung tablet (came free with my phone upgrade), annual, case for tablet, selection box and stocking.
Ill probably get them some pj's too but thats it, there really isnt any need to have a huge stack of presents.