Why make peace time more appealing?
The only serious damage we can have right now, in most cases, is massive starvation. I see no reason to reduce the importance of war damages by improving population growth like this.
This isn't reducing the importance of war, it is decreasing the time we spend not being in war. Do you really think, just because you gain a few more peasants a day, that people are going to say 'hey, let's stay bored and sit around!'. This request is trying to reduce the time that people are sitting around.