1. Blockchain will never be able to access my wallet, correct? Even if a Gov't wanted Blockchain to give them access to my wallet, they couldn't, correct?
If you backup, but the government can shut down their servers and you even said people are lazy so you don't have a backup your done. Also you never know the NSA could have a super compter that can break the encryption, you never know, I don't know the exact way blockchain.info stores but if they get shutdown it isn't good.
Bah. If the NSA can break the encryption, then they can probably break the ECDSA keys and SHA-256 hashes built in to bitcoin. At that point it no longer matters whether you are using blockchain or not.
2. (since I'm still learning) I only need to create a backup of my wallet on Blockchain once, right? If I create a backup in January....and then in June I add 50 Bitcoins to that wallet on the Blockchain website....and then a day later Blockchain get's shut down by the Gov't....I still have my BitCoins on my backup from January, right? Then I can import it into another program like Multi-bit, right?
Depends if you create a new address and send it there then no. If you just use on address, then your anonymity is affected. I don't think they are deterministic wallet.
Exactly, you can choose. Re-use addresses for added convenience and loose some anonymity, or use a new address and increase anonymity while loosing some convenience.
I'm confused as to why I shouldn't like Blockchain
I saying this in general for all online wallets, but it is hurting network health, it is making people open targets on there wealth if not properly backed up. It is holding a lot of funds which are rising in price, and people are using brute force attacks on looking for people who use alias wallet names and attacking there passwords search the forums. 2FA can save you but then if your not backing up your finished.
Most wallets will work fine for the day-to-day use of small amounts of bitcoin. Think of it as a wallet, not a bank account. Sure you can loose a wallet with cash in it, or it can be stolen from you. You'll be upset, but not devastated. If you are trying to store larger amounts of cash or for longer periods of time, then you need to start thinking about increasing reliability and security. You probably wouldn't feel comfortable walking around with 1,000 $100 bills stuffed in your pockets. You'd look for more secure and reliable ways to transport that money.