Consumables - best practices

We are just now deploying Service Now.  The consumables are forcing us to reevaluate how we have handled these in the past (in particular monitors and docks). Previously, we asset tagged these and assigned them to individuals.  Then we attempted to track them until time for disposal.

When we tried to load into Service Now the business rule grouped our consumables by model. It seems to not want us to track by person.  My question has been why?  There is obviously a business decision for Service Now to be set up to do this by default.

I am trying to figure out what the best practices are for managing consumables. All I keep finding is the how, not the why.

I work for a local government and we are under strict rules for how we need to account for all electronics and dispose properly when the time comes.  If an asset or consumable disappears, we need to complete a police report.