From an informal survey among my married male friends, those who pursue amp services and the like do not get any intimacy at home, often have in turn lost interest in their SO (including for wives who went from hotties and lookers, to stuffed pigs after a few years/pregnancies) and as a result they prefer this to investing money and efforts in a traditional affair. Often kids are the primary reason for choosing this route (vs divorce), a route that has its own risks but it is generally more discrete, lower effort.
At this point, you can pretty much see who among my friends gets it at home. Typically there are more public display of affection with their partners, often mixed with a wife who still cares for her body.
It is sad all around but hey relationships are complicated.