Hops bring more than just flavour. They are anti-bacterial, this is a very important part of making beer. This makes the beer naturally preserved, this doesn't seem to solve that issue.
Is that still a usefulness though? I can imagine when fermenting, "bottling" and stuff wasn't so clean in ye olden days but nowadays with sterilising kit and properly sealed bottles and cans is the antibac in hops actually doing anything?
Hops bring more than just flavour. They are anti-bacterial, this is a very important part of making beer. This makes the beer naturally preserved, this doesn't seem to solve that issue.