Because I trust in the ever-changing climate of the heart. (At least, today I feel that way.) I think it is necessary to have many experiences for the sake of feeling something; for the sake of being challenged, and for the sake of being expressive, to offer something to someone else, to learn what we are capable of.
A box of crayons and a big sheet of paper provides a more expressive medium for kids than computerized paint programs.
You can't quantify love, and if you try, you can end up focusing on misleading factors. Stuff that really has more to do with personality-the fact that some people are simply more expressive or emotional or needy in a relationship. But beyond such smokescreens, the answer is there. Love is seldom-almost never-an even proposition.