Miners and bitcoin clients are doing a "work/job".
They aren't just "mining" and doing some useless math.
"They are confirming that all transactions are good."
Without their work, the network will become totally insecure.
It's like a secretary job.
Everyone in Bitcoin is doing the same job.
You should give a check to see what are doing the miners and simple client other then simple "mining".
The "block" isn't a simple random data.

Making sure that all transactions are good is a valuable job, and the fact that Bitcoin is totally anonymous is another big value for some merchants.

If I mine, and then I confirm a block of Bitcoin ... then I confirmed that many and many transactions were done well.
I just did the secretary job well.

I see it like this physics joke:
http://www.funnyjunk.com/funny_pictures/357458/Magic/
It's like a circle, everything works because one thing has a meaning that give a value to the other one and vice versa.

I see a difference from just mining "gold", because as you said finding "gold" is a totally useless job.

What do you think about my point of view?

Sorry but english isn't my mother language ... I hope that you have understood well

I don't agree with your position because governments and laws do exist regardless of what you might like, and they will happily just seize your servers or throw you in jail if a court gives them permission.

How can I store bitcoins securely?  Instructions here.

I plan to start a new thread tomorrow, with ideas how these BTC exchange services could become better by using other payment services. Only for now: With liqpay.com your customers would need only their debit or cc, a cellphone to be able to receive and send money. Why not paying and get paid for BTC over this? They only had to give their phonenumber to the trading partner, and their db/cc data to liqpay to withdrawal the money. If some don´t trust liqpay, they shalt get some free debitcard.