Re: Downsides of Bitcoin?

I think the most is still too many hackers. Need to be carefull to really feel safe storing btc in web wallet.

Why store coins in a web wallet when you have better wallets? Install a local wallet [1] or buy a hardware wallet [2].

[1] https://bitcoin.org/en/choose-your-wallet
[2] https://bitcointalk.org/index.php?topic=899253.0