My sis had to loosen her vegetarian standards for the sake of her daughters health.

We are omnivores, accept that fact. While you can survive without flesh (and the modern person eats too much of it), it requires personal effort and research to find substitutes, with the risk of damaging your health. And most just prefer some meat or fish now and then.

Btw, almost all herbivores are opportunistic omnivores, because they can’t research substitutes. Even sheep eat chicks, there, i said it.