The companies on this list are essentially "too big to fail" giants in their respective industries, all with decades of uninterrupted dividend increases. They truly fit the "worth holding for life" profile because they have demonstrated the resilience of their business models and their long-term commitment to shareholders through decades of action.

* Coca-Cola ($KO): The king of consumer goods, with 64 consecutive years of dividend increases. Its brand and global distribution network form an incredibly wide moat; regardless of economic conditions, people drink Coca-Cola—that's certainty.

* Johnson & Johnson ($JNJ): A healthcare giant with 63 years of dividend growth. Its highly diversified business, covering pharmaceuticals, medical devices, and consumer goods, makes it exceptionally resilient and a typical defensive core holding.

* Lowe's ($LOW): A leading home improvement retailer with 55 years of dividend growth. Standing alongside Home Depot (HD), it benefits from long-term demand for home repair and improvement, and its dividend growth history is outstanding in the retail industry.

* McDonald's ($MCD): A global restaurant giant, earning stable cash flow through a real estate + franchising model. While not listed in the standard "dividend king" criteria in this search result, its stable dividend history is widely recognized.

* S&P Global ($SPGI): A financial data and index giant with 54 years of dividend growth. It doesn't directly profit from stock market fluctuations but rather from providing ratings, data, and index services—essentially "selling shovels"—making its profit model very stable.

* Visa ($V): The undisputed leader in global payment networks, benefiting from the long-term global trend of shifting from cash to electronic payments. It doesn't bear credit risk and is a model of high-profit, low-asset business.

* UnitedHealth Group ($UNH): The largest health insurance company in the United States, benefiting from an aging population and the inelastic demand for healthcare. It is a healthcare giant with relatively low policy risk.

* Lockheed Martin ($LMT): The world's largest defense contractor. Its orders primarily come from the US government, offering high certainty and exclusivity, making it a defensive option in times of geopolitical tension.

* JPMorgan Chase ($JPM): The largest bank in the US, considered a cornerstone of the American banking industry. Its strong balance sheet and diversified business are its core strengths amidst an uncertain interest rate environment.

* Microsoft ($MSFT): A rare "dividend king" among tech stocks, possessing a strong cloud business and stable cash flow, achieving a good balance between high growth and shareholder returns.

A Note and Reminder

Regarding the definition of "dividend king": It's important to note that "dividend king" is not an official index, but rather a market title bestowed upon companies with an exceptionally long history of dividend growth. Therefore, lists of "kings" compiled from different sources may vary slightly. For example, Microsoft (MSFT) and Visa (V) are known for their phenomenal growth, but they are relatively young in terms of the hard metric of "50 years of uninterrupted dividend growth." This doesn't detract from their excellence, but simply serves as a reminder that this list is a blend of "growth" and "dividends."

Regarding the current timing: You mentioned "receiving dividends for life," which is a good idea, but the current US stock market is only a step away from its historical high. For investors hoping to "buy and hold long-term," even if these companies are of excellent quality, buying heavily at a high price in one go may still expose them to the risk of short-term valuation correction.

In summary, these 10 companies are the "ballast" of their respective industries. They have become "dividend kings" because their business models and financial discipline have withstood the test of more than half a century. For investors seeking long-term, stable cash flow and believing in "compound interest over time," they are indeed worthwhile targets for in-depth research and long-term tracking. The key is finding a suitable entry point.