I'm unsure about love. I've never experienced love before, if it does exist.
There is a lot that makes me question love. The main reason is because sex is such a powerful force, especially for men. I think most guys claim they are in love, when they really just found a girl that is willing to have sex with them on a regular basis.
On the women's side of it, yeah, they want sex, but it seems women are more into the companionship and socialistic side of so called love. The complaint I have about women who claim they are in love is many of them seem to be loving the fact that a guy is financially stable more than who he is as a person. It also seems that many women go out with guys to impress everyone else (family, friends, acquaintances).
I just believe that true love is so incredibly rare, if it does exist. It seems that most people don't fall in love with the whole package someone has, they fall in love with what they can get out of the relationship to suit their own selfish needs.