But that does not make it right to push that personal belief in a professional setting.
I agree that to follow what the many do in a culture is not an illness at all. It is normal. And I agree that casual sex is a norm in many societies. I also agree that people who live hypocritically are being unethical.
I don't have a problem with people having casual sex, personally. I actually face a similar situation in my own life with many people in my society believing that cohabitation is bad, while I choose to cohabit and see it as a common choice young people are making in my society. It also turns out that when I speak to the people who think it is bad, quite a few of them have cohabited themselves. It is frustrating. The judgment feels stupid, useless, and hypocritical. I understand that. And if I heard it from a psychologist in a professional setting, I would leave immediately and file a complaint.
psychologists don't necessarily have anything to do with that sort of judgment. There are research psychologists who work in labs studying neurons; industrial-organizational psychologists who work with businesses to determine best practices; developmental psychologists who work with kids with delays; forensic psychologists who work in criminology; school psychologists who help kids who struggle in school; personality psychologists who are interested in static traits, like the ones we talk about on this forum. None of those kinds of psychology are directly related to beliefs about casual sex. So there is not really a reason to desire lab research on neurons to be stopped because of a bad counselor.
I think that it would be a more accurate use of your anger to file formal complaints against the specific people who treated you wrongly, as opposed to being angry at people you have never met. Bad individuals are everywhere... I think it has more to do with the inside of the person than the job they are working. There are bad and good people in every field. Bad doctors and good doctors. Bad lawyers and good lawyers. Bad psychologists and good psychologists. Medicine and law are still good fields, though, and I feel the same about psychology. You happened to run into some bad psychologists, but I don't think it's the fault of psychology as a whole, especially considering that in many subfields of psychology, there would be little interest in the ramifications of casual sex. I think it's the fault of the specific individuals who mistreated you, and it would be more accurate to punish those individuals for their behavior, rather than seeking to punish a very large group of people who did not have any interest or participation in harming you.