The yield and taxes -- those are two solid measures of a companies ability to pay, and a company that can't pay is -- just for that -- not an investment.
Folks claim that rather than paying out the doubly taxed yield it's better to take that money and invest back in the company. But be careful -- charlatans and frauds will be among the loudest so claiming! Shorthand, it is far healthier to call any tradeable instrument that is unable to or does not return a regular yield a speculation.