As you've probably heard many times before, men are visual creatures.  'The 69' provides visuals that aren't available in day to day sex and make outs. It's sort of like when you go to get your oil changed every 3000 miles and see the bottom of your car hoisted on that giant lift.

Wow, I didn't notice my car's muffler is that long.

Same thing here. Seeing your vagina and yes, even your tushy so up close and suspended, is sort of thrilling. It is also consuming. It's all up in ya' face like sitting in the first row of Avatar. There is a sort of a mental hard on about being one with your privates.

What's more, 'The 69' is unique in that it allows for both partners to simultaneously trade oral. It's mighty egalitarian in that regard. No other act is so even handed, well perhaps sex, but there is something special about the balancing act of 69'ing. It's like two worker bees doing there thing on opposite sides of the hive. Both slaving away, licking and lashing away for shared goals: pleasure and climax.

As for how to dodge doing it and still be sexy, it's not easy, but there is some wiggle room . Ya see, when a man is fixin' for 69 he will do that thing where he positions your body over him and starts twisting and titling you with his hands. You, not wanting to go that way, will offer resistance to his positioning you. And so there will be a natural tug-of-war for a moment or two - a stand still. Here's my suggestion: in that moment take his wang and offer up a sultry, "No, I want to concentrate on doing you" or, take his hand and place it on you, then offer up an "I want to lay back and watch you work me."

That's not going to make his 69 wishes evaporate, but it will... lessen the blow.