PDA and their expiration date

Recently I was waiting in line in a restaurant for a table. It was lunch time, I was alone and the restaurant was pretty crowded, so the couple next to me was practically touching my shoulder. I didn't mind that. What I did mind was the couple was passionately kissing, and a man had his hand on a lady's behind. You would think that it was a couple of teenagers. Wrong. The lady was at least 40, and the gentleman looked about 10 years older. They completely disregarded me standing right next to them, and I was feeling really disgusted.

Today I was sitting in another restaurant, alone again, eating my lunch, when a couple walked in and sat at the table next to mine. Again, the lady was in her 40s and the gentleman in his 50s. They didn't stop kissing until the waiter brought them their food, and when that happened they proceeded to eat from each other's plates. If they liked each other's food so much why wouldn't they exchange plates? You would think that would be more convenient, but that way people around wouldn't have any idea how much they enjoy each other's company, would they?

What is it with older people and their public displays of affection? Is it in fashion right now? Did I miss the news? Is everybody doing it? Do people enjoy seeing it? Am I so conservative that I frown upon what everybody accepts as a perfectly normal adult behavior nowadays?

I heard from friends who have been to the beaches in Europe how women usually sunbathe topless, and men always comment how they enjoy seeing a 25-year-old woman topless next to them but can't hide their disgust when they see a 50-year-old in the same outfit (or rather without one). It's the same with me and public displays of affection. I can understand when 20-year-olds do it. It's cute. It's sexy. It's charming. Oh, except when private parts groping starts - that's where I draw the line even for teenagers. Thinking a little, especially for teenagers. But once you are past 35, public displays of affection start to disgust me.

Older people, what is with your PDA? Your hormones are no longer jumping up and down so that you need your passionate kiss right then and there. I understand your desire to feel young, exciting and sexy. But there is a time for everything in life. There is a time for displays of passion in public - you passed that time. Now there is a time for a more respectful showing of affection. By publicly groping each other and exchanging bodily fluids you are disrespecting not only each other's age, but also people around you. Holding hands or having your arm around your lady's waste will suffice until you get to a more private place and will show people around you how much affection you share as a couple. And once you feel the need to touch each other's private parts, no matter how old you are, it's time to get a room.