yoyo,
How’s this for a trial run at marriage. Try taking care of a baby for a day – feeding, changing, putting to bed, etc. Have the mother not too far away if something unusual comes up.
Marriage and family life is about helping/caring for others.
My opinion is that in marriage a couple must have common values and goals. You need to be clear on your values and what you want out of life. Then you can find someone to complement and/or supplement you.