What might motivate someone to study forensics

The reason why anyone can study forensics is the desire to become a criminal expert.

Explanation:

The forensic career is a fairly broad denomination. We can interpret as criminal expert, investigation, detective or even study forensic science, which is the application of a set of scientific techniques to answer questions related to law, and may apply to crimes or civil acts.

A person may wish to study forensics because of the desire to be a criminal expert. The official criminal experts are civil servants and work in the state's Criminalistics, Forensics and Identification Institutes, and federal and civil science police bodies. Generally speaking, the criminal expert's primary function is to go to the crime scene for evidence and then perform laboratory tests as DNA. It is also responsible for coordinating the work of forensic assistants.

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so above is the minimum distance at which it will detach