why dont people use rooting hormone on crops so they can establish stronger root systems

Rooting hormone can indeed promote root development in plants, but there are several reasons why some people may choose not to use it on crops:

**Cost**: Rooting hormones can be an additional expense for growers, and they may prioritize costs in their farming operations.

**Natural Processes**: Many farmers and gardeners prefer to rely on natural methods and the inherent hardiness of plants. Plants have evolved to establish roots on their own under normal conditions.

**Ease of Use**: For some, the application of rooting hormones can add an extra step in the planting process that they may not feel is necessary, especially for certain crops known for their ability to root easily.

**Knowledge and Awareness**: Not all growers are familiar with rooting hormones and their benefits. Some may simply not be aware of how these products can support plant health.

**Crop Type**: Some crops do not benefit significantly from rooting hormone, especially those that are already known for their robust root development. 

**Organic Farming**: In organic farming, the use of synthetic rooting hormones might be restricted or prohibited, leading growers to avoid them in favor of organic practices.

**Perceived Risk**: Some growers may worry about the potential for chemical residues or negative effects on the environment, leading them to seek more natural alternatives.

While rooting hormones can indeed help in some contexts, many growers have found success using traditional planting methods that do not require these products.