Keyless entry remote reduced chance of breaking a key in the lock
Once you have a key, there is always the inherent possibility that you might break your key off in your lock. This is mostly because the wear and tear that keys experience as they are used every day. In most cases, people do not take the wear and tear of their keys into account, even though they should. Keys are not built to last forever, and each time they are used they are gradually worn down. Using a key that is worn down increases the chances of said key breaking off in the lock. It is important to be aware that this is not the only way a key breaks in a lock though. In some cases, it is simply because excess force was applied while the key was in use.
However, this problem is virtually non-existent when it comes to a keyless entry remote. This is because there is essentially no key to be used, so there is no key to wear down or any key to break in a lock. Even if you have a keyless entry remote that is paired with a transponder key, there is still a reduced chance of your key breaking in the lock. The reason being that you will not be using the physical key to unlock the car.