I'm going to speak in broad hypotheticals here. Whether they pertain to my particular case or not can be left to people's imagination.
People who stop "arguing" are either madly in love in the honeymoon phase or one partner has given up the will to keep fighting a futile fight.
Some hobbyists I'm sure just put up with the bullshit at home knowing full well that they're going to get some guaranteed happiness for a discrete interval of time at some point. It is possible that this is a viable solution. It is also possible getting a dose of happiness once a week or so allows one to keep the "rage" or anger at bay.
There is a reason why mistresses are so common in some cultures, etc... I believe this is the. Reason. This is also one of the other reason why escorts do so well.
It may be case that seeing other women I.e. Cheating may in fact make conditions more optimal at home...I.e. Less prone to arguments, which ultimately at least on the surface at a superficial level gives children the impression that the parents get along.
I
don't think cheating is akin to taking drugs for the excitement. It's not really the excitement that makes me want to hobby. It's more I really want to escape and immerse myself in a fantasy experience wherein I can imagine in my mind being with someone else.
Many differing perspectives and rationales on why people hobby I suppose... The last bit here just pertains to me.
Ps I have enjoyed this discussion in spite of having differing views