My friend had parents in their 60’s when they adopted him. He spent his teenage years helping his mother care for his father. His memories of his father mostly

My friend had parents in their 60’s when they adopted him. He spent his teenage years helping his mother care for his father. His memories of his father mostly consist of going to doctor’s appointments before he passed around his 16th birthday. Then, in his senior year of high school, his mother passed. He had no other siblings or close relatives and inherited his mother and father’s house, vacation property, cars, etc. Fast forward about 15 years and he’s still living there. The house feels like an old person’s home. He isn’t well adjusted and while he’s financially secure, he’s unhappy and has trouble relating to others.