Alright, I'll go there: What is wrong with developing an app that is used for extra-marital affairs, even if that is its explicit purpose? For the sake of arg

Alright, I'll go there: What is wrong with developing an app that is used for extra-marital affairs, even if that is its explicit purpose? For the sake of argument, lets just say that extra-marital affairs being immoral is axiomatic (I don't agree, but that is not going to be a productive discussion). The two people who made vows are the ones with the moral obligation, not the rest of society. Every individual third party is not part of that arrangement, and who are they to second guess somebody who is in that agreement? Both are consenting adults, there is no justification for us telling them what to do. If they want to promise each other something, and then go back on that promise, that is entirely between them.