I'll make it simpler. It is you and your man coming out of the bunker. All alone. Do you look for food or make a baby?
I obviously look for food and then first available break i jump on his cock and get pregnant. Sorry, but if you put it that way i have to put it this way. I understood the original question and poll on longer and wider terms, not on " we just got out of the bunker, so now what? what's for dinner?". Otherwise Re-establishing a functioning government, Procreating and Preserving the knowledge of mankind wouldn't make any sense at all in the poll, unless you wanna re-establish a govrnment by dinner being just you and your wife who just came out of the bunker alive. On a longer and wider term i rest my case: maintaining and rebuilding the species have the priority over other long term plans; in case of lack of food you don't stop procreating: you rationate it giving more to youngsters and women and less to elders. Elders are an acceptablòe loss in that sistuation, while youngsters and women are much in need to get more chances to rebuild, create, find and maintain those sustainable food sources, re-establishing a functioning government, preserving the knowledge of mankind.
Obviously if you talk about making sure to get a decent dinner that day, i'd probably go looking for food, but that has nothing to do with sustainability. Hey, of course my 2 cents...nothing to fight about, right?
Dammit i MUST goto bed...it's so late i wanna cry... Good night peeeeps!