It makes sense; if you like to give and receive head - and I do as well, the 69 is the position to go with and it kinda avoids that problem with busting a nut and now you'd rather go pave your driveway on the hottest day of the year than to keep having sex. Sure, it could still happen but you're both sharing the moment. Having someone sucking on your cock as they're busting a nut can be... incredible. I know if my 69 partner makes me cum, his dick is gonna catch a bad break as I continue to suck on it and, yeah, hoping that he's gonna cum any second now.
I always loved performing 69. I really enjoyed and got very good at eating pussy. I have a longer than average tongue and even used my nose to rub her pussy. Getting my cock sucked at the same time made it even better.
Mutual oral sex in 69 positions has always been my favorite whether with a man or a woman. There's something very erotic and special about giving/receiving at the same time.
69 is frequently included in our play. Multiple times a month and its dependent mostly on if we're playing on a mattress of some sort or not. Yes, we have both came while 69ing but its mostly a transitional part of extended foreplay (lots of oral) where we're just "enjoying the ride" 69 gets a bit of hate but its something my wife and I have enjoyed for over 35 years and still do. There is something about the "pleasure circle" that 69 puts us in where to me there is a pleasurable energy being exchanged and circulating from my mouth to her pussy then returns from her mouth to my cock and it continues to run this path and boosts as it moves from mouth to genitals and playing with that ebb and flow of energy by how we use our mouths lips and tongues is certainly great fun for me (and she)!
I’m not a fan, more of a novelty. I would rather concentrate on pleasuring her, or receiving her attention. Yeah I have done it with previous partners and my wife now, but the actual act is a little complicated. Just let me go down on her, and she can go down on me, and then we get onto the main course. But hell, that is just me.