I've done them multiple times and I don't regret them. But sometimes is so embarassing and confusing for me to wake up next to someone and not even remember the name.
i lost my virginity with a stranger, then i didn't had sex in almost 5 years, until 2 months ago when i met this guy and now i've had nearly 5 ONS, and i don't regret it, those guys were HOT and the sex was amazing, and the best part is that in ONS there is NO DRAMA