I will give you the answer you are looking for. The protections offered by bitcoin exchanges is minimal or non-existent. Even if they are not hacked by thieves, there is always the risk that they may prove incompetent or dishonest and lose your money anyway. You would not leave money with a bitcoin exchange for any longer than the minimum amount of time necessary to make an exchange and, even then, expect lengthy delays in getting your money out.
Sufficiently accurate.
What The_Animus is pointing out is that banks are not much better.
Utterly incorrect. In order:
1) Banks (the institutions themselves) are dishonest/fraudulent at a rate far lower than Bitcoin exchanges have proven to be. There is a centralized certification authority for banking institutions; there is no such thing for exchanges.
2) Dishonest bank employees are routinely fired and their thefts recovered. The ones that make the headlines are the exception, not the rule.
3) FDIC insurance ensures that a certain minimum of your money is not lost; this minimum is sufficiently high that only a tiny fraction of a tiny fraction of people will ever need to know the exact amount; last I checked that was $100k and that's precisely why I don't know what it is now.
4) It's far, far simpler to get your money out of a bank than it ever will be to get your money out of one of these exchanges.
The Animus attempts to beat a false-equivalence dead horse by suggesting that just because the government insures your deposits against loss or theft, the money's still been taken from somewhere, and thus it's an equally bad thing. This, of course, is patently false -- the government (FDIC) is far more capable of absorbing such losses without any noticeable impact, while an average person who loses $10,000 that he expected to be there will have a huge problem shrugging it off.
In order to gain any semblance of public confidence, they need massive regulation and government backed deposit insurance.
Ignoring the unsupported assertions for the moment: in case you haven't noticed, Bitcoin doesn't currently even have a remote semblance of public confidence. Just sayin'.
However, both those assertions are utterly incorrect. Banks were popular well before there was significant regulation and deposit insurance.
Of course, what you both have ignored is that banks are necessary only when you deal with fiat currency.
You appear to have neglected history during school. Leaving aside the proto-banking stuff from very-ancient-history, banks were in heavy use long before fiat currency was even a figment of someone's imagination.
FTFL: "By the end of the 16th century and during the 17th, the traditional banking functions of accepting deposits,
moneylending,
money changing, and transferring funds were combined with the issuance of bank
debt that served as a substitute for
gold and
silver coins. ... Modern banking practice, including
fractional reserve banking and the issue of
banknotes emerged in the 17th century. "
It is not feasible to carry large sums of cash around with you (especially for long distance transactions) since they are susceptible to loss or theft. You also run the risk that authorities might demand that you prove that you came by the cash legally or forfeit it. (At least with banks, you have a documented record of how you came by your money).
All this supports the contention that banks are necessary.
With bitcoin none of that applies.
Really? You had better tell the Silk Road guy that; his Bitcoins got seized and auctioned because he couldn't prove that he came by the cash legally. Bitcoins are less susceptible to highwayman-theft, but significantly
more susceptible to loss due to the extra effort required to store (and encrypt) the wallet key.
Even if an authority could trace a wallet to you
*cough* Silk Road
you have a ready made record of all the transactions made by that wallet.
Which is all worthless if an authority can't trace a wallet to you (and thus can't prove independently that your transactions are legal) and you've been sending Bitcoins to and from others without any third-party involvement.