136 years from now, your HDD will be just about enough to store the entire blockchain. This is just a guess. 30 years ago, a kilobyte of data was a lot and a megabyte was unthinkable. Then a few years later, people were dreaming of gigabytes. Today, hard drives are measured in terabytes. In the future? Add a few zeros, maybe.
136 years your pendrive will be storing yottabytes, and for your harddrive they will have to make up some ridiculous names to store ridiculous amounts of data. Although moore's law has a physical limitation (we can't go beyond atomic scale) probably by then we will have some hack or discovery to keep evolving towards a world of data exuberance lol.