I enjoy it, however it is something my Daddy and I are very careful of. First off I have asthma, so can't be choked too long, plus there is the risk of serious damage if you choke too hard.
For me, the choking is more a mindset. He never chokes me hard enough that I cannot breathe, rather it is the sensation of his hand around my neck that puts me in a very submissive mindset.
When we want to do more control he will put his hand around my mouth and nose, since that is much safer, Once again though, never to the point of passing out, rather He is showing me that He controls my life fully, which is something we both agreed to from the beginning.