One big thing I can think of is that every time you use a credit/debit card, a transaction fee goes to a big bank/payment processor. With btc, it goes to a miner.
Other than that, how does it benefit you to use btc? I mean you need fiat to get btc, and then usually need to take fiat out. So where is the net benefit besides the fees being lost by the big banks/payment companies?
for me the best benefit that bitcoin offers is the fact that i can transfer a large amount of money in form of bitcoin super fast and with the minimum amount of fees. and on top of that it can be most secure way with a little effort.