I don’t think it’s unfair at all. Everything about Sarper screams „bringing up children is women’s work, I’m only there for the fun parts“. He’s got this macho mindset about a lot of things he and he certainly doesn’t look like the person who‘d get his hands dirty with shitty diapers. You can love someone and still don’t think he’d make a great dad. And because she wasn’t considering kids I guess this is fine with her.