PDA - Public Display of Affection? Yes or No?

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i understand how couples can get a little bit too intimate and lovey-dovey with each other and that's perfectly normal... kissing, hugging, holding hands, caressing, in public is okay with me. but if it goes beyond wholesome public display of affection, like necking, tongue-in-the-throat kissing, grabbing of body parts not supposed to be grabbed while people around you can ogle, sometimes even with moaning, that to me is plain gross. i mean there's a proper place to do that, you know like, A PRIVATE ROOM! how about you, how far have you gone or willing to go with PDA?