Why do some women swallow? You know what I mean

this just made me giggle like a little kid haha I want to also know the answer to this question. Im guessing just for kinks. I dont know for sure though. Ive tried doing it for my man and I nearly puked on him. Ive tried to do the hold & spit thing when hes not watchng but I thought "ew its in my mouth" and I said BLLLLLLLLLLLLECH! and spit it out LOL he just laughed at me. I personally think its gross. But yes...come on all you swallowers shed some light on it for us :)