They turn away not considering the very reason why they chose to stay with each other.

I can look at my parents generation....
They, stayed together for years and years...
Determined to do so for the children...
I learned later in life they had many issues, and finally the dam wall burst and they split....
So I guess they reached their limit...

These days people split a lot sooner, not willing to waste years in a unhappy relationship...

When I look back over the few long relationships I've had, I can see from my later perspective, that they were defective from the start.

So I would add, that sometimes, the only reason why the relationships ARE long, is because at least one of the people are trying very hard.

That's why, I think, a fair number of people list as one of their "yellow flags" at least, that the prospective new mate is all about pleasures of the moment, or who go on and on about what they "deserve."

That should answer your question.

Why "leave" cheating?

You are admitting there is a legitimate reason for ending a relationship.

Everything else is subjective.

To some, a boring relationship is just as bad as cheating, so to them they have a legitimate reason to end it.

To others, high amounts of stress or arguing is just as bad as cheating, so to them they have a legitimate reason to end it.

You may want to just "leave" reasons as obvious, but to other people their reasons are obvious to them where you might simply not accept or understand them or find them justifiable.

After that the answer to the question of:

is "any reason they feel is legitimate, from their subjective perspective, to justify ending a relationship."


Anything can break a relationship.
Different people have different breaking points based on different things.
And people are constantly changing throughout their life which changes their breaking point(s).
It's why communication and listening and spending time with your partner is so important.

Relationships are defined by the people in them, relationships don't define people (except maybe dom/sub relationships).
So relationships don't "break," people simply change/end them.
A relationship can't break unless a person ultimately decides they want it to.
Relationships don't "break" with people going "omg, but we are so happy and perfect right now...ugh, I hate it when this happens, darn, guess it's over since the relationship broke, oh well..."
Relationships don't break, people just don't want to be part of them, and then they break the relationship.

If you want a generic answer of "why" then that's easy.
Long term relationships end either because:
1. They aren't getting what they need/want from it.
2. They know they can get what they need want from somewhere else.
3. The costs (emotional, physical, mental, financial, whatever) of keeping it up causes more stress than it alleviates.
4. Some combination or all of 1-3.

And sometimes the things the people "survive" just caused stress they keep with them, adding to the burden.

I think people are embracing the idea that life is short and after putting in a certain amount of years in trying to salvage a relationship that doesn't appear to be working, they abandon the relationship in search of their greater goal in life, which is overall happiness

Good evening Sir. May be people get tired of standing on the tiptoes ...

there are a lot of factors that can end a long term relationship like emotional problems from dealing with the death of a loved one or miscarriages. I have learned that cheating is not the source of a breakup but a symptom of a larger unresolved problem that was going on in the relationship