Obviously a personal decision, but let’s breakdown the advantages of each!
Single hole faucets are easier to clean, are less expensive and great for children or people with dexterity issues. Single hole faucets are also great for bathrooms or vanities with less space.
However there is just something regal and sophisticated about a 3 hole faucet, don’t ya think? Plus you can get more accuracy and control with a 3 hole faucet to get the optimal temperature.