What kind of love? There are many different types IMO. I liked the discussions in Plato's Symposium, for example, as an exploration of the variety.

My own favorite thought about it is that when we feel love for someone/something, it is usually a response to some of our own values, whether we are aware of it or not. It involves projection, even if only abstract ones. I personally do not believe in totally selfless, unconditional love and think that's more a beautiful ideal and myth. Even things that are often associated with unconditional love, such as the love of parents for their children, the love of saints, or of animals, are without personal interest and reward from the side of those that love. Both the human and animal brain is wired in a way that we seek experiences and company that reinforces the source of the seeking itself and without that source and reinforcement (even if only imagined), it will not last long. It can be a very powerful force that can lead to both great constructive acts that goes beyond the self in its manifestation and great destruction if it becomes harmful and only self-serving in the moment.