The simple answer is value! The SSD wins the performance-per-dollar almost every time. Systems big, small, short, tall, black, or made out of the broken glass of whiskey bottles. They all benefit from the power of the SSD! From simply having a boot drive, to using it as a platform from which to share the photos you've taken of yourself doing wonderfully dirty things to your vintage collection of sock puppets at lightning speeds, everyone can find value!
Note: This was not autobiographical in anyway. Shut up.