Used? Naa, but I would say, for me personally it did leave me with a hollow feeling which is why I decided in the long run as a single guy swinging is not for me. (But I like interacting with like minded people which is why I am here
Now ideally I would find a woman who feels the way I do about sex etc. But you have to be realisitic, its tough to find the right person to begin with and add this into the mix....