Dividend-paying stocks have generally outperformed those that don't pay dividends over the long term. That's partly because maintaining a healthy dividend requires a solid underlying business. And investors who reinvest those dividends can significantly boost their long-term returns. That said, not every company that pays a dividend is capable of consistency. Many find it necessary in hard times to decrease their payouts or suspend them altogether. Two that are unlikely to do either of those things anytime ...