10 million is a massive amount to have already been mined... thats like $70,000,000 
The first bitcoins were mined by people investing their time and computer resources in a system which at the time was highly experimental and nobody really knew whether it was going to work or not. They took the risk, a huge risk in fact, and they deserve to see a return on their investment. They've earned every cent of it.
Look at where the whole network was only 100 GHASH
more than 100 thousand blocks already were already mined in Jan/11
http://blockchain.info/block-height/103000 look how difficult? 18,437.64
5 million relatively easy bitcoins