There is a much easier way you know, and I really can't understand why people keep using blockchain.info these days and what makes me even more mad, there are a lot of people supporting it.

Here is the difference (considering you have a safe PC)
If you install a desktop wallet like Electrum or MultibitHD, the only thing you need to safeguard very carefully is the SEED, without it no one can touch your bitcoins. While while you are on blockchain.info you rely on third party to do your transactions, EXTREMELY STUPID CHOICE if you ask me.

Anyway in the end its based on user choice, if the user is smart he moves from online wallets to desktop ones, if he is not he continue with online wallets.