He has a valid point. If you not paying for it, who is?

Electricity is not cheap and mining use a lot of electricity... someone has to pay for it. The fact that you saying, you are paying taxes, does not validate that you can use that amount and even more for yourself.

Your tax money is used for lots of other things, other than electricity.

If you still convinced that you want to mine, goto the mining section and discuss it there, you will get group miners, who might be interrested.