user13032: If I delete the Bitcoin wallet from my HD, my Bitcoins will be still alive inside the Bitcoin network, right?
Is there any way to remove my bitcoins from the network in a permanent way?

user12034: If you don't use them, nobody will be able to use them, so in a sense they will have disappeared. If you wish for them to be publicly, permanently destroyed, you could try one of the approaches at What is the Bitcoin equivalent of /dev/null?, such as sending them to the address 1111111111111111111114oLvT2, which is the address of an all-zeroes hash. There are technically many private/public keys that correspond to the address, but finding one is practically impossible.

13032: <p>If I delete the Bitcoin wallet from my HD, my Bitcoins will be still alive inside the Bitcoin network, right?
Is there any way to remove my bitcoins from the network in a permanent way?</p>
 12034: <p>If you don't use them, nobody will be able to use them, so in a sense they will have disappeared. If you wish for them to be publicly, permanently destroyed, you could try one of the approaches at <a href="https://bitcoin.stackexchange.com/questions/3777/what-is-the-bitcoin-equivalent-of-dev-null">What is the Bitcoin equivalent of /dev/null?</a>, such as sending them to the address 1111111111111111111114oLvT2, which is the address of an all-zeroes hash. There are technically many private/public keys that correspond to the address, but finding one is practically impossible.</p>
