My own view is that a military has to have a purpose.
Because of their geographic placement Britain nor Ireland aren't in danger of invasion from a hostile state.
So what's the purpose of a military?
It's to have an influence on the world stage.
In line with Britain chosen path of rapid decline we have chosen not to do that and our influence has declined in kind.
Our place on the security council will come under threat literally because it's a product of military budget and capacity.
Ireland's main export in terms of influence is cultural and along with Britain can be said to be soft power.
In terms of military, Irish males who want a military career traditionally joined the British Army to see the world and learn trades. While I wouldn't recommend anyone doing that in today's woke environment.....I would imagine that would be the most sensible action for that kind of person.