It is scarce, ergo it has value?
I think you are trolling :-)
I try it again:
The energy used to secure the system, and to mine the new blocks makes the value.
If you don't understand it, so be it ya zandiq
Discussion
Securing the system doesn't give it value, it just presents value from being undermined by thievery. You still wouldn't value it if it wasn't scarce, but you will not change your evaluation of it based on changes in energy supply and demand like you would if those were the reasons for your current evaluation.