Because they are gun loonies.
And anyone interested in a democratic republic has to be a "gun looney".
That is because guns are the equalizer that ended all the tyrants, monarchs, dictators, autocrats, and evil despots, by allowing average people to beat the highly specialized and trained professional mercenaries who had allowed the tyrants, monarchs, dictators, autocrats, and evil despots to rule over us, before firearms equalized us.
Essentially:
Populations with firearms = democracy.
Unarmed populations = dictatorship.
It is not just magic that democracies happen.
They have to be fought for, earned, maintained by dedication and responsible gun ownership by the general population.
Go back to our own history.
Vietnam obviously was wrong, but there were too many profiting from it for it to stop on its own.
It required massive effort of students and vets to finally end it.
But we can't rely on that any more because they ended the draft.
The current military is all mercenary, for pay.
They are never going to go against those who pay them.
So we are in big trouble.
There was no one to protest against the evils of invading Grenada, Panama, Iraq, Afghanistan, Syria, etc.
And it is getting worse, not better.
An armed population is more necessary every single day.