This is an important topic. A few thoughts (apologies for how long this got)…
Yes, it’s definitely possible to stop seeing prostitutes and settle down. Or to settle down and then see prostitutes. I know numerous people who’ve done both. Marriage and prostitutes are not mutually exclusive.
There is a lot more to a relationship than sex. Sex is actually one of the less important elements. Unfortunately modern christianity, which is the foundation for the sexual culture we live in today, has elevated sex to be the key element and this has caused a number of problems.
Sex is certainly important in marriage - it’s quite enjoyable (and for many it’s more so with someone we love and are devoting our lives to) and it also very significantly strengthens the marriage (compliments of how she responds to oxytocin pair bonds created by sexual activity). But there’s much more to a good marriage than sex and this is something that’s gotten lost because of so much emphasis and expectation being put on “sex being only within a monogamous marriage” - which is not in The Bible.
Lifelong companionship (in a monogamous or polygynous marriage) is perhaps #1. Someone we can care for and who cares for us. Someone we can always talk to and who’s always there when we need them. Someone to share happiness and sorrow with. Someone who knows us intimately and still loves us despite our many faults. Someone to share hardships with be they our physical or psychological selves, financial or a very long list of other things.
Expecting this one person to also meet all of your sexual needs? I think that works well in some cases, not so much in others. It’s like saying that every spouse/partner also has to be a great massage therapist, great nurse/caregiver, great cook, great fix-it person, and on and on. It’s not realistic.
What if for some reason his wife can no longer have sex? Is he expected to live a life of celibacy? Divorce her so that he can marry someone else who can have sex?
As well, men are not necessarily designed to be monogamous. While many are quite happy with monogamy, others are not and for some I think a monogamous sex life is very nearly impossible. Expecting some to live a perfectly monogamous life may be putting them in an impossible no-win position.
If you read The Bible, that modern christianity and so our sex culture is somewhat based on, you’ll find that throughout the old testament men routinely had multiple sex partners - multiple wives, multiple concubines (mistresses) and likely multiple prostitutes. There was no expectation nor mandate for male monogamy - in or out of marriage.
And God never changed his mind - there is nothing in the new testament mandating male monogamy or prohibiting multiple sex partners either.
Our sex culture today appears to be based on later church teachings (likely from around 1100ce though there was some writing of monogamy appearing around 450ce), not the Biblical teachings that we believe it’s based on.
More than a few historians believe these non-biblical teachings, which besides mandating male monogamy prohibited numerous other partnerships such as marriage to cousins out as far as 6th cousins, were mostly about… money. If you gave enough money or land to the church then you could be allowed to marry your 3rd cousin or… divorce your wife so that you could marry another... Or...
It’s also important to note that common prostitutes (as opposed to temple prostitutes) were treated quite well throughout the Bible. They are given much more recognition and status in the Bible than in today’s culture and that’s unfortunate. We seem to have regressed more than progressed.
Even such vaunted theologians as Aquinas and Augustine were pro-prostitution as both believed it necessary lest men’s sexual appetites cause them to rape young virgins.
So, yeah, not only possible but…