[ It's just not translating properly. He's right, their lives are too different, and she's not good at generalizing her own experiences in words. Abstractly she knows there's a universal truth there, if only she can put it in a way he'll understand. ]

Of course it isn't. It's different for everyone, but there still have to be things that you want. Stupid little things that aren't right or wrong but are still worth living for. Things that make you happy, even if it's just the feeling of going to bed after a really long day.