I am in love with this world
I have climbed its mountains, roamed its forests,
sailed its waters, crossed its deserts, felt the sting of its frosts,
the oppression of its heats, the drench of its rains, the fury of its winds,
and always have beauty and joy waited upon my goings and comings.
John Burroughs

I believe that saying that we live for love engulfs the largest range of things: from love to self to love for a thing and so on. Love is such a big word, but maybe we need big words to describe the purpose of our lives, so as not to feel at least small ourselves. Or maybe, we say big words because we are unable to point a specific thing and feel that it is a right one. One way or the other, love, in my opinion, is a good thing to live for.
First of all when our goal in life is to spread love it makes not only us happy, because we do what we believe in, but it also makes others feel good. No matter how difficult the situation might be a person willing to help, to listen, to understand, to do sometimes even nothing but stand quietly, makes a huge difference. Giving love, or care, you could specify, requires undivided attention on the person in question. In a way it could be said that mostly we love others for the love of ourselves, because we get as big the present back as we were willing to give. It might sound selfish, but it is inevitable.
However, I think that love for a person is not nearly as big as the love for the world. I personally tend to experience the love for the world, especially when I am taking pictures. I like microphotography, because it is amazingly overwhelming to witness such beauty, such natural order and simplicity that my heart seems too small to grasp it. To live while in love with the world is just like to see that beauty everywhere: in good and ugly things alike. To live with the belief that every single thing and living being was created in love and for love is my purpose.
So, love is truly amazing, and it seems that indeed it should be the ultimate thing to live for, it is big enough not to reach it completely but near enough to feel how good it is and chase it as far as possible.