ylaiCDPR wanted to split players 'in a way that's almost 50/50' with Phantom Liberty's hardest choice, and drew on the toughest decision in Witcher 2 to do it
I always feel sad betraying one person or the other. They did a really good job of not making the choice easy
Especially when after trying both choices you realise the best choice for the world at large is to fuck over reed AND kill somi.