What are the disadvantages of being a hunter gatherer?

There are few disadvantages to being a hunter-gatherer. Anthropologists used to believe that being a hunter gatherer was a tough existence but studies have shown that actually they spend much less time on collecting food sources than we spend growing them. A thorough knowledge of the available resources in an area means that its possible to predict with relative certainty when and where to find food, unless there is a particularly bad season, which would also affect farming societies.

The main reason we see hunter-gatherers as having a hard life is because they have been pushed into more extreme environments by other societies, who over history have spread over most of the globe.