When you say "we" you probably mean someone else (the US) or their children.  
Please note that ROK troops would actually do most of the allied fighting, with a smaller US ground force but significant US support and key enablers.  South Korean civilians in the Capitol region (pop. 25 million) would likely pay a very heavy price from DPRK artillery emplaced immediately north of the DMZ (to say nothing of the North Koreans potentially getting a nuke through the Patriot/SM-3/THAAD shield). 
Feel free to advocate getting a lot of other people killed though.