To start with basics, you will of course know that 'Utopia' actually translates to 'Nowhere'. More published his book in 1516 anditwas a gentes satire on the popular 'mirrorsfor princes' genre (Machiavelli had published 'The Prince' in 1513).

More, of course, was effectively saying that this erfect society could never exist in reality becuase it ran counter to human nature. I agree with him, and am not about to start creaing any utopias.

As for the battlefield, there are three.

Of these, the least troublesome are wars between humans. We're a tribal species and we will carry on fighting each other unless a new species is found that we can all fight together against. As in Starship Troopers whre the manufactured war against the Bugs is all that is holding Earths quasi-fascist society together. The trick here is damage limitation, but at least warfare gives us somewhere to put the psychopaths.

Preferring peace to war is merely sensible. War is uncomfortable, costly and makes people suffer. Sometimes it's necessary, but should not be entered upon lightly or be too prolonged.

Next is the war against Nature. Wild, unpredictable, hostile nature. We have been battling, and will continue battling to subdue the wildrness and make it comfortable for us.

The final battlefield, the one in which no victory is possible, is to find an answer to the absurdity of our lives in a vast, mostly lifeless and wholy uncaring Universe. Our battle to find meaning, purpose and intention in what is meaningless, purposeless and without intention. Or which, even worse, has a meaning, pupose and intention to which we are irrelevant, are not part of. The answer here is to adopt the Stoic view of dealing with the things which are in our power, and disregarding those which are not. It is in our power ot learn more about the Universe, and to use that knowledge to make our lives better. Perhaps even to make ourelves better.

As to Christian ideals, Christians have them without God, so He's clearly not necessary..