In my humble opinion, when spouse asks their significant other for “separation”, there is something behind that particular word.
It means, “at this moment, do not want to have nor share responsibilities, that of which is wife’s /husband's obligations.”
Speaking from statistics, Separation does lead to
divorce, more often than not.
Separation leads to unfaithfulness
Separation leads to lack of respect (for your still Wedded wife/husband)
Separation is essentially form of "running away from your problems"
In fact separation is one of the grounds used for
divorce. ( won’t get into deep details with that)
Either you two are really open minded about you relationship, or…
Or it is just funny that while many couples would find separation, traumatic/devastating event, you find it to be “not a bad idea.” Hmm… very interesting.