So whats the point of the mining, I'm wondering if there is something dark your computer is used for while doing the mining, because otherwise, what is the benefit of your machine running all day long.?
Sorry, what? What dark thing are you referring to?
You are mining to confirm transactions in the blockchain and make sure that the network is able to keep sending transactions back and forth. If people didn't mine, new blocks would not be created, and transactions would not be confirmed, and people could not send Bitcoin, or receive it. There would also be no new Bitcoins being created and sent into the network.
Your account says that you've been here for a relatively long time, I'm surprised that you don't know something like this.
In other words, they mine blocks and transactions are included in it. If in some point in time that the blocks are totally mined, there will be no block reward anymore hence their income will be reliant to transaction fees.
You see, there is no dark thing here. Mining is not something trivial or shady.