Love. If you want to live well, choose love. Not to the exclusion of the rest of your life, but - between the two, it's love that fills you up the most.
However, saying that, a healthy relationship doesn't give ultimatums. And if you have an ultimatum, then the relationship isn't about the person, it's about forced co-dependency, and achieving some prescribed life achievement.
I don't think you can have an answer to that without some clarity on each choice. For me, there is no conflict. I have a career to have a family. But I'm a man.My wife started a career after having kids, and I see what it means to her. She has a career for personal reasons. She thrives on the esteem she receives, the satisfaction of doing good work, pleasing people, and impressing people.But for a young person, I would say this. Love is a commitment to the present. Career is a commitment to the future. They work together for the good in many ways. But they compensate for each other in unhealthy ways as well.I tell my children to commit themselves to their futures and prepare for them. Not in specifics like what to major in, etc. But to do their future selves the favor of taking care of themselves now.The same goes for love. You can love now as a commitment to your future. You can focus on your career now as a commitment to your future. But if there seems a conflict between love and career, its usually because of a lack of commitment to your future. Not because you face a vital choice about different futures.
Love comes first. always. but not love in the romantic sense, but the love for your family, for those close to you, definitely come first. Also the love you have for humankind in general come first. The love for those you don't want to love, the annoying co-workers, the terrible boss etc
It depends what you mean by youngsters If you mean that its a teen thing,usualy they will not be with the same person for years anyways,mind you saying that have,but it is rare. Love will come around again for teens, so I would say a carer is a good thing to pick as it will also help in the long term with employment,as also most teens dont have their jobs forever neither,but can be a good starting point if there is something they are doing now and enjoying it,but want something better later on. If we are talking about a young person being in their mid late 20,s Id go for the love first,as it may be something more real and if its true love.