How much sat/vbyte should a bitcoin mempool have?

In the realm of cryptocurrency and finance, a pertinent question often arises regarding the optimal size of a Bitcoin mempool's satoshis per virtual byte, colloquially referred to as "sat/vbyte". Given the fluctuating demand and variable nature of Bitcoin transactions, what would be considered a healthy or optimal sat/vbyte ratio for a mempool? Does a higher sat/vbyte indicate a more congested network, requiring miners to prioritize transactions with higher fees? Conversely, does a lower sat/vbyte suggest underutilization of the network's capacity? Understanding this metric is crucial for both miners seeking profitability and users aiming for cost-effective transactions.