Just like how honey bees produce an abundance of honey. The moment you have any kind of abundance, something will be created to take advantage of that abundance. Nature tries everything.
All farmers - Not nihilistic, Not stable
All pillagers - Nihilistic, Not evolutionary stable
Some ratio of pillagers:farmers - Not nihilistic, Evolutionary stable
Where nihilism means that the society is very self defeating that it collapses instantly. And evolutionary stable means that the society can maintain it's general composition for a long enough time period.
P.S: There is probably a better word than nihilism for what I have chosen it to mean.