user6290: Why didn't the creator didn't manage to allow people to be able to mine without needing a mining pool ?

user71255: Mining pools allow miners to reduce the variance of their income. It is possible to mine without a pool. This is known as solo mining. 

user69241: I think, that was exactly Satoshi's intention. 
But nowadays, it would be hard for you to mine 1 block because you don't have much mining power if you are alone.
So the people decide between Do I want x$ per day (irrelevant wheather I mine a block) or Do I want 25*15,000$ + fees (if I mine a block what happens maybe 0-1 times) Most people want(ed) the permanent money.
And that's the reason why there are only a few big mining pools instead of millions of separate miners.

user48884: Bitcoin was and still can be mined by an individual that is not part of a mining pool. In fact, the network does not actually know about mining pools nor does it care about them. In the beginning, Bitcoin was mined by individuals using their own CPUs. Then, as more and more people wanted to mine Bitcoin, miners began using faster and faster hardware, moving from CPUs to GPUs, and then to FPGAs, and now to ASICs. 
Unfortunately the rapid growth of mining meant that it was harder for an individual to be able to find a block. So people began pooling their resources together. A bunch of individuals would mine as a group and the block reward would be split up among themselves. That group would have a higher chance of finding a block than just one person mining by himself, and while each would be paid less, they would be able to earn Bitcoin more consistently as they have a higher hashrate than just one person. And thus mining pools were born.
So it isn't that Bitcoin was designed to be mined at mining pools, but rather that mining pools were a natural evolution from the increased overall hashrate of the network.

6290: <p>Why didn't the creator didn't manage to allow people to be able to mine without needing a mining pool ?</p>
 71255: <p>Mining pools allow miners to reduce the variance of their income. It is possible to mine without a pool. This is known as solo mining. </p>
 69241: <p>I think, that was exactly Satoshi's intention. </p>

<p>But nowadays, it would be hard for you to mine 1 block because you don't have much mining power if you are alone.</p>

<p>So the people decide between <code>Do I want x$ per day (irrelevant wheather I mine a block)</code> or <code>Do I want 25*15,000$ + fees (if I mine a block what happens maybe 0-1 times)</code> Most people want(ed) the permanent money.</p>

<p>And that's the reason why there are only a few big mining pools instead of millions of separate miners.</p>
 48884: <p>Bitcoin was and still can be mined by an individual that is not part of a mining pool. In fact, the network does not actually know about mining pools nor does it care about them. In the beginning, Bitcoin was mined by individuals using their own CPUs. Then, as more and more people wanted to mine Bitcoin, miners began using faster and faster hardware, moving from CPUs to GPUs, and then to FPGAs, and now to ASICs. </p>

<p>Unfortunately the rapid growth of mining meant that it was harder for an individual to be able to find a block. So people began pooling their resources together. A bunch of individuals would mine as a group and the block reward would be split up among themselves. That group would have a higher chance of finding a block than just one person mining by himself, and while each would be paid less, they would be able to earn Bitcoin more consistently as they have a higher hashrate than just one person. And thus mining pools were born.</p>

<p>So it isn't that Bitcoin was designed to be mined at mining pools, but rather that mining pools were a natural evolution from the increased overall hashrate of the network.</p>
