Of course, the bigger problem is that you can't really trust the info sec of your bank, the IRS, etc.
That is very true.
Many people worry about theft of information in transit to it's intended destination. The "unsecured WiFi" angle. While there is potential for theft there, the bigger potential is AFTER it's reached it's destination. And it doesn't matter what route your data took to get to that final destination - over WiFi, sent in a physical letter, faxed, communicated over the phone. All these big hacks you read about almost daily are not intercepting data from unsecured WiFi connections. They are hacking into the final destination servers and stealing entire databases of many peoples data. And if that final destination database is not well encrypted and protected, you're hosed. Doesn't matter if your data got into the database via WiFi, or from you sitting at a desk with a loan consultant at your bank typing it in on their hardwire connected desktop computer.