Whats the deal with porno kissing?

[SNOWBALL138]

The porn actors lick eachothers tongues without any lip contact. This is in almost every porno I've ever seen. Does anyone else find this kind of kissing disruptive?

When I watch a porno, or any movie, I try to suspend my disbelief. Its hard enough to to that when a pizza delivery guy is getting a BJ before he crosses the doormat.

Does it have anything to do with Health concerns? Is it the director's idea or do the actor's prefer it this way? Is it the law that rimjobbing is ok, but kissing isn't? Or that rimjobbing and kissing can't go together?

Any ideas?