The post-antibiotic era is fast approaching, according to the WHO.
With antibiotics losing effectiveness, Phages would appear to be a realistic replacement treatment. Phages can be specified to target only the malignant bacteria, and they have a different method of attacking bacteria than antibiotics. This means they will be effective against pathogens that are already resist antibiotic techniques. Another advantage of using Phages over antibiotics is that phages have the ability to evolve with the bacteria to respond to resistance.
More information about the potential role of Phages in the future of medicine, according to redditor CarbonKaiser, can be found here.