My dad is on his own.
I have always (bar one when mum was still alive and brother living at home) spent christmas at his house, right up until last year.
This year because we are now in a house that is ours (well HA but as close to ours as we will ever get) we have invited him to ours to save him doing all the donkey work again and to give him a rest.
I am looking forward to it, but I really would like next year, not to feel like I have to invite my dad and that my brother and SIL will offer, but I know they wont. SIL is 6mnths shy of 30yrs old and never spent a christmas away from her mum and dad.
Dont get me wrong, I love my dad to bits, and I would NEVER EVER have him wake up on his own christmas morning, I just couldnt do it, so if that means we rotate between the both of us now, then so be it. Would rather that than think of dad alone.
PIL are not an issue thank the lord - we and them couldnt think of anything worse than having each others company on christmas day! 9 times out of 10, FIL is working anyway, and from what DH says, his childhood christmas's were not very good - he has only started enjoying christmas since we got married and have a proper traditional few days.
Anyway - ive rambled enough. I feel sorry for those who do have these arguments though. Life is far too short really, 4yrs ago I wouldnt have imagined my mum not being around to see her grandkids at christmas.