These are not battles. These are just people/companies having careers and making money. Even the researcher is usually forgoing the well paid job to do the research because the research is interesting to him - he's just trading off one for of payoff (money) for another (job satisfaction). Meanwhile, there's no payoff in volunteering to go to a war with a high chance of getting killed or maimed.
Re: battles. There are still real battles in the world (Ukraine, Syria) where there's plenty of heroes.
To sum up, I'd say that it's a blessing that a lot of the world is so peaceful now that the meaning of the word 'hero' is getting washed down to literally 'people doing their (maybe slighly unpleasant) jobs'.
Re: battles. There are still real battles in the world (Ukraine, Syria) where there's plenty of heroes.
To sum up, I'd say that it's a blessing that a lot of the world is so peaceful now that the meaning of the word 'hero' is getting washed down to literally 'people doing their (maybe slighly unpleasant) jobs'.