Passive income can be a beautiful thing. It can be a set-it-and-forget it investment that generates money without you having to do anything. It can also be a bad idea for retirees, depending upon the situation. Not all passive income is the same, and some is more passive than others. Trending Now: This ‘Boring’ Investment Could Be the Secret To Never Running Out of Retirement Income For You: 5 Clever Ways Retirees Are Earning Up To $1K Per Month From Home Here are three passive income ideas that retirees ...