Banks have their purposes. I know we here all hate banks and want to talk about how it is horrible that banks make money without producing anything and so forth but in the end banks do have their purposes as well. For example interests for people who have money is alright, because in the end not everyone would want to invest their money into a business or a real estate so they just collect interest.
Also, the loans for people who need it, it shouldn't be given to people who look like they can't pay but nowadays they are giving it to everyone and if they pay then it is okay if they can't bank just seizes their stuff, bank gets their moneys worth no matter what. So there are few other stuff as well like making the cash turn into debit card and so forth but they are abused, normally a bank could be something very decent.
I guess you really came from a country that their government has the interest of their people at heart. In my own country, bank will not willingly give any interest on your savings, in fact no bank does that, the only time you receive an alert from your bank is when they are debiting your account from a charge you know nothing about.
For loan aspect, banks gives loan, but in the end, they are still the one that will collect the interest on the loan back from you after stressing you before releasing it. The cheapest interest you pay back on any loan you take from my bank is 21%, is it all business you do that will give you more than that interest at the end of the year? So my dear, you must appreciate your government banks for making things easier for you guys.