Is there really such thing as casual sex?

The fact we can now control whether or not we procreate means that we don't have to concentrate on whether our 'mate' will make a good father/mother, but instead we seek only pleasure. Who's to say that's wrong? I personally wouldn't partake in a casual fling, but I don't judge others who do. It's a personal preference, and the truth is that it's enjoyable and easily accessible so many people choose to. Also, I don't count sex with someone you care about as casual, even if you aren't trying for a baby, I consider that to be part of a healthy relationship.