Automatically adding gratuity on groups actually is a good idea for servers. While some of you may say you always tip more than the X% added as auto-gratuity, not everyone does this! Besides, when multiple people are paying for a bill (especially if they're using both cash and credit card payments), it's easy for even well meaning customers to accidentally stiff the server.

Just because gratuity is on the check, it doesn't mean you're unable to add more! Feel free to add to it to equal what you normally tip.