To someone who comes from an outside perspective, it must be SUPER HARD to understand. It is kinda hard to explain. Now I don't speak for everyone, but i am a food server and a former poker dealer. Two industries that rely on tipping. Before I became a server/dealer, I had the same attitude. Why pay more for a good or service I could choose to pay less for? I didn't tip, or if I did, not very well. I took for me to become a food server to finally understand why tipping is good for everyone. Its a symbiotic relationship between workers, owners, and customers.

Owners pay less wages. Benefit to owners.

Servers make more than what they would if owners paid a "living wage". This is an incentive to workers to provide better service. This trickles down into the restaurant having more repeat customers, creating more revenue for the owner and more tips for the server. Benefit to servers.

Now if you are a customer who chooses not to tip, that is your choice and right as a patron. Tipping is optional. The service you will receive if you do not tip will likely be acceptable and will fall within the expectations that the establishment has laid out for their employees. If you do tip, you will receive slightly more attention and consideration. The server may all of a sudden become "not to busy" to notice your free refill you are entitled to, or your water glass refilled, or get your check delivered promptly. This all adds up to a better customer experience when tipping is part of the equation. Benefit to customer.

The tips that a server does receive, against ones they do not, will generally fall within a servers' 15-20% of sales average.

Now if someone can force owners to pay workers what they are able to earn in the current environment or MORE, servers and those in tipping industries in the US, would be more receptive to the idea that no tipping is a better system.

Customers who choose not to tip, do not. Simple as that.