IT professionals
I'll start with IT professionals. They are usually the closest to the Dark Web, and feel the most comfortable accessing it, either because of their vocation, or simply out of curiosity.
They know how to use the tools that allow safe access to the Dark Web, such as VPNs and Tor.
Many IT professionals need to access materials on the internet for their work, which may violate strict company procedures, such as not being allowed to access site X using organizational browsers. This is a tricky situation, since they can't perform their work without violating the procedure/policy.
This is a type of catch-22.
To resolve this, IT professionals can use the Tor Browser (or other Dark Web browsers), which won't alert the organizational security systems of this action, due to the way Tor works.
Additionally, if the IT professionals do this on a regular basis, they usually have a dedicated machine ready for Dark Web access, which also minimizes their risk of exposing the organization (monitoring...