From E. Fromm, The Art of Loving,
I will shorten and paraphrase:
"For humans the fundamental problem in
life is doing something effective about
feeling alone. The first recommended
solution is a good romantic relationship."
It's also the kind of question that this career-planning stuff smashes into. Do you want to get married? Have children? Believe me, those are tremendous commitments that will drastically interfere with your career (and vice versa). I've been married 22 years and raised two children to semi-adulthood. It has dominated a quarter to a third of my life.
From E. Fromm, The Art of Loving, I will shorten and paraphrase:
"For humans the fundamental problem in life is doing something effective about feeling alone. The first recommended solution is a good romantic relationship."