Altria (MO) might catch your eye with a 6.4% dividend yield and a 56-year streak of dividend increases, but there's more to the story. The company sells mostly traditional tobacco, and that core business saw revenues and volumes drop last quarter. Most of its growth came from price hikes, not real demand, and both its smokeable and smokeless divisions are losing market share. While Altria's current payout isn't in immediate danger, its long-term ability to keep raising dividends looks shaky without a turnaround in sales or product relevance. This isn't just about a big yield—sustainability matters.