Often this doesn't matter, but for applications like cryptography true randomness can be crucial.
But like I said, true randomness is impossible for a human to achieve.
Furthermore, in a way, the idea of using a predictable electronic machine to create true randomness is nonsense.
Art is presented with true randomness, in the hope that it will stimulate us to perceive it through artistry of our own.
Physical computers are deterministic machines, and obtaining true randomness can be a challenge.
This suggests that true randomness requires an infinite expansion of the information space.
After seven characters of true randomness, it gets impossible.
We have some indications that true randomness may play a role.
These methods are quicker than getting "true" randomness from the environment.
This includes not just sources of true randomness, but also uncertainty resulting from lack of information.