Guess what, you do not have a new car anymore. It is 3 years old and has 50K miles. While the water pump may not have lasted as long as most, it is not that unusual for a water pump to spring a leak. Even a Toyota water pump.
Most tires supplied from the factory seem to last only about 30K miles and my Honda tires were shot at 23K miles. Brake pad wear is widely variable based on how the driver uses the brakes and how many city vs highway miles a car racks up.
If you are not happy with your Toyota Camry Hybrid, you now have more options and perhaps you can try a Ford Fusion Hybrid next.