BY Robert E. Lee

Caring for a loved one with a serious illness can be exhausting and disheartening. Robert Lee of Oolitic, Ind., shares the story of his wife's 2009 diagnosis of glioblastoma multiforme, and the physical, cognitive and emotional losses that have followed.

I never wanted to get married. A happy, 40-year-old bachelor, I didn't need the added stress.

I was already stressed out doing two jobs: an environmental compliance...