I'm an ex-Bmed employee, was there for many years, had a great time even if the destinations weren't the most desirable to most people but it's what you make of it at the end of the day.
BEY is a fab destination, I used to love it there. Trust me, Bmed won't send their crew anywhere where's there's deemed dangerous. I agree with apaddyinuk's last comment, well said.
At the end of the day, we're all adults and have the freedom to choose to apply for whichever airline we want to, it should be an informed decision that you make based on what works for you as an individual. I also used to work for BA, so I know about certain aspects of working for them aswell.