At least the kind currently on the market, the Cavendish banana. As reported in the Huffington Post, a disease known as the Panama Disease, caused by a fungus (Fusarium oxysporum), largely wiped out stands of Gros Michel bananas, the principal banana imported to the US until the early 1960s. Thereafter, the then-resistant Cavendish banana was imported instead, even though it had a blander taste.
Now, however, a more virulent strain of the fungus has emerged (now called Tropical Race 4), and is steadily devastating banana plantations worldwide, except for Latin America. However, its jump to this last bastion is almost inevitable given the pace of world trade.
This is not just a problem for US consumers of bananas; hundreds of millions of people worldwide depend on Cavendish bananas as a food staple. Part of the problem is that the Cavendish culture is a monoculture; it has no genetic diversity, and therefore no resistance to fungus. All plants are susceptible. Likely, then, the solution will be to shift to banana cultivars that actually breed so that fungus resistance can be selected for; however, this will take years, if not decades. There is no telling at this point what political ramifications might arise fro this shortage of food.
In the meantime, enjoy your bananas; like oranges becoming rarer because of citrus greening disease, they may soon become a thing of the past.