Swallowing

Why is it that men love when women swallow? In the 36 years I have been alive I had only done this once. It was several years ago and swore never to do this again. But recently I was forced to do so. And I have got to say…It wasn’t as bad as I remembered. It took me a while to get it down and yes some of it did leak out…but when I am forced to do something it turned me on greatly. I am not sure why this is because I hate to be forced but it is so erotic. Now when my Master says to suck his cock I know that I have to do it until he is bone dry.