I don't think there is such a thing like uncoditional love, there is always a reason why you love someone. Maybe you love someone because he/she is part of the family, maybe you like someone's personality and so on. Unconditional love may be figurative, but I don't think it makes sense even as a metaphor.
"By simple common sense I don't believe in God, in none"
Charlie Chaplin
Charlie Chaplin