The French use the term, ennui. It is a kind of boredom that comes from living in an emotional vacuum, an existence in which no one is either happy or unhappy. Just an easy, comfortable, predictable, routine existence punctuated with brief moments of either joy or sadness.
You, the readers, could have more important stories than my own. That knowledge tells me I should listen to those stories and do what I can to polish them a little. Then use this medium to inform and inspire others to do something similar.
There are both men and women who provide excellent care for their spouses without giving evidence of being severely affected emotionally, physically, or spiritually.
It may be a cliché, but it seems clear to me that love remains long after most other parts of the brain and personality disappear.