My brother in law had very rich parents. He did never learn and never worked.
When he was 25 he was sleeping all day and at night he was watching video's and playing computer games.
He got addicted to pills, divorced from my sister, and commited suicide when he was about 40 (it was his third attempt already and he spent a lot of time in psychiatric clinics and therapy).
People should have a sense in life, he did not have that at all. So he decided to end his miserable life.
...
Sorry to ask: how did this suicide impacted your sister?