I'm still very confused about Bitcoin. Now, I opened a wallet from blockchain, ok? And you know, I have the identifier, pass, mnemonic info and etc...
Do I need to something extra? I mean, isn't this enough? Why people are using other wallets?
1st what coinshot said, but also specifically blockchain.info (dont say blockchain it leads to misunderstandings) has a history of beeing unreliable. One great thing about bitcoin is that you can be the only person responsible for your money. If you are using an online wallet you also have to rely on other people.