Asking Eric: Parents financially bailing out their 63-year-old child

Dear Eric: My brother-in-law (never married, age 63) has been financially irresponsible as long as I’ve been married to his brother. He has accumulated tens of thousands of dollars in debts. He currently has no addictions, no mental health issues, but lives with his mother who is aging but continues to pay for his necessities. He gives his money away and people take advantage of him. His parents have always bailed him out and feel like he’s a victim. He has had steady jobs over his lifetime and gone to college – many reasons why he should have savings for retirement.