Reduced risk of identity theft during online shopping. Cons:

They generally cannot be used for physical, in-store transactions like buying groceries unless added to a digital wallet.

Some services struggle with long-term subscriptions if the card is set to expire frequently.

Use virtual card numbers to pay online or in apps - Android - Google Help

Buying a virtual card is a smart move for anyone who shops frequently on unfamiliar websites or wants to manage subscriptions more tightly. While they aren't a full replacement for a physical card in the real world, they are an essential tool for the modern digital shopper.