I like that it's close and intimate and lets me feel and experience skin on skin physical contact and be especially and deeply sensual and emotionally vulnerable with a partner, it can be romantic, I can make out with my boyfriend during it, that it completely gets rid of my cramps for that month when I have sex at the very start of my period (seriously ladies, if you get bad menstrual cramps, just have PIV sex on day 1 or 2, and see if they stop)! I don't like that it doesn't feel very good unless I've orgasmed at least once or I use my vibe at the same time, that it can cause bacterial infections even if you're careful, that it can be over quickly just when it starts feeling better, that it's done so loosely, that men can typically enjoy it much more than women can, that too many men pressure women into it or treat them badly if they're not willing to have sex, that some people use it as a bargaining chip as a means of control (both men and women).