My father lives nearby in the family Airstream R.V. trailer (refer to Airstream Chronicles for example picture) with the family dog. He visits my mother daily and is very supportive to her (he cared for her himself for three years before it became too difficult). Somewhat disillusioned, my dad is OK.
But would you feel any different? Imagine what emotions would fill you if someone you loved dearly screamed and panicked when you are absent, or became angry when you rearrange something. If the person you planned your whole life with could no longer recall who's who in your family or speak your name--let alone help you enjoy your plans--and were not even in the right age risk group for this type of disease.
Forced into early retirement by a slowdown in the gold industry four years ago, my dad occasionally tries to get another job. He's been an extractive metallurgist for 30 years, and he's almost retirement age. Every attempt foiled by how expensive his paycheck would be for an employer.