Sometimes I think people get pretty judgmental on our various indiscretions, the fact is people are imperfect and so are relationships.
There are many married or committed relationship people out there who for whatever reason no longer have a spark (shall we say) or passionate intimate relationship any longer.
They may well have other parts of their relationship which gives them reasons to remain in the relationship. Children, jointly owned assets, elders, wife more attentive to new children than husband, busy family life, to name a few.
For these people to meet their sexual fulfillment needs in an outside relationship be it with service providers or other is matter of their own choice and has been going on since early civilization. More appropriately, how discreetly and
safely they manage this might be more to the point.
The Brits think its crazy to break up a marriage because of cheating, they think the civilized thing to do is have an affair. In the days before Catholics allowed divorce this was very common.
Its a big world out there with many types of people and values, just because some have chosen to make their lives more complicated by going outside the relationship for intimacy
does not necessarily mean anything other than a specific need not fulfilled in a relationship gets fulfilled outside the relationship.
In many cases it is not meant to be malice towards one's significant other.
Sometimes seeking intimate comfort fills a need we all have and perhaps we are healthier meeting this need than to be deprived.
(maybe I should be a marketing advocate for the industry) just kidding