>>938080374 (OP)
Physically it’s hard to describe because it’s a relatively unique feeling. It’s warm and wet and the sensation of lips wrapped around your shaft is like a sweet little hug for your cock. I have an average dick, so I’ve had the pleasure of being throated and pushing to the back of a girl’s throat with her nose pressed against your lower abdomen and her chin pressed against your balls is heavenly. Bonus if she’s topless and her tits are brushing against your thighs.
Mentally there’s a slight domination factor, but it really depends on her. Some will rush a bj and I believe those girls want to spend as little time as possible being viewed as a hole for the sole purpose of making a cock cum. If you’re really lucky you find a girl to worship it and then you’ve got a whole new layer. The blowjob being broken up by ball sucking, with your wet, hard cock laid on her face while she slurps and licks your nuts will make your eyes roll into the back of your head.
Getting head is also a bit like flying. Having a girl who’s really good is like flying first class. Most girls in my experience are economy. Economy is fine. It gets you there. But once you’ve flown first, you live with the knowledge your flight could be more luxurious.