Most people seems to be any of the following:
1. Airing half baked understanding of agriculture, without clearly understanding the variables that can tilt the scales towards profit or loss.
2. Blaming land price changes on real estate agents, investors etc is not a correct approach: Land is a constant - with very low possibility for adding by human effort - encroaching and filling water bodies is the only way humans can do to increase land surface-whereas demand for land comes from various directions-infrastructure development, industrialisation, housing, farm area increasing etc, and price changes are a cumulative effect of all these variables. So, don't blame brokers or investors-of course, they are trying to make a few extra bucks out of the murky situation created by various variables that has bearing on demand for land, supply being constant. You can get an acre of land in Russian Far East now for Rs. 1000 or even less because 45% of Russian land is still forest and major part of land in Russian Far East is remaining idle because the population in the area is very low.
3. Sweeping statements like "land where nothing will grow etc" - even there is farming done in deserts for centuries and now also. Adopting a proper system of farming that suits various locations is the proper approach to be taken. But, agricultural science and technology that focus on soil and water fail to understand the fact that plants take around 50% of nutrients from atmosphere and not soil and water. This is the basis for such sweeping statements.
4. So, a properly balanced understanding of the variables that affect land prices is the first thing a land buyer should understand. Regarding farming also such a balanced understanding of variables is required by those trying to enter farming. Mono culture farming, farming based on wrong advises, farming crops without understanding the crops, farming without understanding the market variables, farming without understanding the atmosphere, farming without understanding labour market situations and labour attitudes and aspirations etc are destined to run into problems and losses.
All our industrial/technological sources for employment and income are just a few 100 years old only-a development that followed the industrial revolution. Farming is a profession that remained and sustained huge number of humans and animals for > 10000 years and still the main job of majority of people in the world. If it is a complete loss making activity, why so many people of the world are continuing with it? Many who got high education because their parents did farming and used income from it to educate them, can be seen claiming that farming is a hopeless profession with only losses-if it is only losses how they got the money for their education from their parents who did only farming and they never sold any of their land to educate them .