Mining bitcoins is like finding solutions to complicated math problems that become progressively more difficult.
The more miners there are, the harder – and thus more costly – it is to find a solution.
In addition, your chances of being one of the lucky few who find a solution also get smaller as more people join the hunt.
That’s why mining isn’t reserved only for bitcoin bulls anymore.
Just about anyone with a computer powerful enough can generate coins. But remember that if you don’t have specialized hardware, you might not make much money from mining at all.