The process of bitcoin mining involves having a machine to do virtual work.
A Bitcoin miner does real work. Real resources are consumed in the process.
So do World of Warcraft gold miners. The point is that "work" hold little value to majority of people. Who freaking cares if some computer can solve a math problem faster than another computer.
LOL, you seem to have a 19th century mindset, difficult to say where to start explaining the world but it would take a long time and need a paradigm shift to get the 21st century.
You remind me of the recent movie about Turing: The imitation game - they also laughed at his worthless machine.
Apparently your math, engineering and programming background is nonexistent.
How did you end up on bitcointalk and WHY?
Btw, mining physical gold is also virtual because machines are used in the process?
Mining WoW gold takes resources of a tiny computer cluster running the application - HW worth of thousands and electricity costs of peanuts.
Bitcoin mining work creates a worldwide decentralized payment platform. This is the value you are missing.