I am not sure if it’s really “I don’t want children” or more “I want a career (too)”. In Sweden 76 % of women are employed versus 57 % of women in USA. There are also more women with higher education in Sweden than in the USA.
You have to decide whether you want a career or a child. And when a good career is a viable and achievable option, you decide to have a career instead.
I wanted children, but I wanted to be independent and not poor when I am older, more. I know so many women who are poor and lonely because they did not focus on their jobs. While I am often sad to not have children, I’d never give up my independence and safety cushion just for that biological urge. I know of many women who think the same way.