This steady income producer is a story of winning streaks.It's been four years since I invested in Realty Income (O +1.32%). One of the market's largest real estate investment trusts (REITs) -- and the top dog in triple-net leases for commercial real estate -- is a staple in many fixed income portfolios.The reasons why a growth investor like me decided to buy into Realty Income are probably the same reasons why I'm never planning to cash out of my position. Let's walk through some of the reasons for never s ...