Legal & General (LSE: LGEN) has been a stalwart of my investment portfolio for decades, and it remains a cornerstone of my retirement strategy. I first bought into the company in 1988, following the wise advice of my grandfather, and it has since become a key component of my financial plan. What makes Legal & General so compelling is its consistent commitment to increasing dividend payouts, a strategy that has served me well over the years. This is particularly appealing in today's economic climate, where many investors are seeking stable, high-yielding assets. In my opinion, Legal & General's progressive dividend policy is a testament to its long-term thinking and its dedication to rewarding shareholders. The company's earnings growth has been robust, with analysts forecasting an average annual increase of 7% through to 2028. This growth is expected to underpin further dividend increases, with payouts rising to 23.4p by 2028, according to consensus forecasts. What makes this particularly fascinating is the potential for significant long-term gains. My £20,000 investment in Legal & General is projected to grow to £331,870 over 30 years, with an annual income of £31,196 generated by dividends alone. This is a powerful demonstration of the compound effect of reinvesting dividends, a strategy that my grandfather advised me to adopt. However, it's important to acknowledge the risks. The cost-of-living crisis and increased competition in the insurance sector could potentially impact Legal & General's earnings and dividend payouts. But, from my perspective, the company's strong earnings growth and commitment to shareholder returns make it a resilient choice. In fact, I believe that Legal & General's focus on earnings growth and its progressive dividend policy make it an ideal investment for those seeking a stable, high-income retirement portfolio. It's a share that allows for wealth accumulation across generations, and I plan to pass on my shares to my son, who is now starting his investment journey. The key takeaway here is that Legal & General's dividend-focused strategy is not just a short-term play, but a long-term commitment to wealth creation. It's a share that I will continue to hold and recommend, especially for those seeking a reliable source of income in retirement. In summary, Legal & General's consistent dividend increases, robust earnings growth, and progressive dividend policy make it a top pick for a high-income retirement portfolio. It's a share that I believe will continue to deliver strong returns for investors, and I'm excited to see how it performs in the years to come.