I am using the same bank for all my purpose, i am not interested in changing bank as well as opening accounts in various bank. In my opinion having multiple accounts in the same bank will help us to do the transaction easily.
I have a saving account and a current account for my business purpose and one account in my wife name.5 years before i got my first debit card, last month itself its validity expired, i applied for a new atm card and use the new one now. I don't have credit cards, i use my debit card for various purposes. Also i have some fixed deposits which help me whenever needed. Are you interested in having accounts in multiple banks?