If you don't want to spend your day cooking on Christmas day, don't offer to host. I'd hate to turn up to my mum's and eat 3 day old veg, it'd never happen because my mum loves us all.
I actually cook our Christmas dinner, it takes about 2.5 hours. I enjoy time with my family too. I find it quite strange that Bev thinks the only people who don't like her are emotionally damaged in some way and come from broken homes. She's giving herself away, considering she's from a broken home, she's admitting that she's bitter and desperately unhappy