Newton's Theory of Gravity states that every object in the universe pulls on every other object. Every object feels this force, so it is a universal force. The force is always attractive; it is always a pull, never a push. Picture the force of gravity as the tension in an imaginary rope between two objects.
The whole point of a USB drive is to store lots of data in a small space, so think about what kinds of files you'll want to house on your flash drive. Movies and music take quite a bit of space, so if you're carrying your whole entertainment library with you, you'll want a big thumb drive â at least 16GB.
On the other hand, if you have file bigger than 4 GB, I assume you can't copy it to a 64GB USB 3.0 FAT32 thumb drive, although I don't have big files on that drive now, I could have it in the future, so how much lifespan do I lost if I re-format the Flash drive to NTFS?