Real sorry to hear about this, try not to take it too personally, you're certainly not the only one. Many people get scammed, even the most experienced investors like Ian Ballina recently. While you can't claim you funds and the authorities won't care, you could look into the Hacken service which attempts to freeze stolen assets and can help to limit the profits these thieves will make (if they haven't already sold it).
A recommendation for the future, have a variety of different wallets for different pruposes:
- A hot wallet, that is used for accessing MEW. This can be used for individual transfers of assets.
- A cold wallet, keep these private keys offline and encrypted on external devices (such as Ledger or Nano)
- An airdrop wallet, that has low amount of value which you can use for risky airdrop scehemes
- Use metamask when accessing MEW, this means you can verify transactions and not put your private key into MEW, ever.
- Use etherscan to check your balances, unless you are transfering funds, you should never login to your account.
Hope this information helps and that you're not completely put off investing in cryptocurrency.