NC for this.
My sister married the worst person I've ever known. He's a flash, materialistic conman - literally, he ran a 'business' conning elderly people out of their life savings for worthless 'investments'. He spent time in prison but was never properly convicted (long story).
He has been an absolute unspeakable dickhead to my whole family but my sister has stood by and applauded it. He's insulted us, tried to extort money from my parents, and thrown their help (when he went to prison) back in their faces. AFTER all that, she married him and had his child.
She went on luxury holidays with him on this stolen money, enjoyed pointless designer shoes/bags/whatever, and she has never admitted or accepted that he or she has done anything wrong.
He's horrible to everyone, especially those he sees as 'lesser' than him (waiters/waitresses, elderly, disabled, vulnerable, foreign people) and crawls up the arse of anyone he sees as potentially worth sucking up to.
I've hated him from the moment I set eyes on him and hate him more with each passing year.
I think he's a sociopath and she is just a shallow materialistic selfish piece of shit.