Dulce et Decorum Est" - poem

Do you agree with the speaker of "Dulce et Decorum Est" that if an individual were to experience the hardships of war firsthand, like those of World War I, then he would not be inclined to tell young children that it is heroic and virtuous to fight for one's country?

If this question accepts opinion, then here it is:

I wouldn't agree with the author that that if an individual were to experience the hardships of war firsthand, like those of World War I, he would not be inclined to tell young children that it is heroic and virtuous to fight for one's country although his experiencing firsthand war battle that is horrible and painful for the following reasons:

Step-by-step explanation

*Our country is our ancestors home who also fought whole-heartedly just for us the new generations to live freely and with pride.

*Dying for the country is not only a heroic act but also it gives our country men new beginning, new hope and freedom. 

*If our soldiers wouldn't be soldiers at all (since the poem ironically says so that it is not sweet to die for a country) then who would do it for the young and new generation?

*Any country is worth dying for.