Then I can call the bank, tell them I didn't make that transaction, or I didn't agree to it, and if i'm lucky they will refund it right away, then investigate. I then need to follow up on that investigation because if they find for some reason it's not "fraud", then they will recharge me that at a later date, so I need to keep up on it until resolved.
And no matter how easy it is to get a card replaced, it's work that I shouldn't need to do.
I'm not saying that Visa is "broken", or that Bitcoin is the only way forward. But I am saying that I think Bitcoin's core values are better than the current system. And that one day Bitcoin will be easier, more secure, more private, and just as usable as Visa.
Hopefully one day we will look back on the way current payment processes are run and it will seem as terrifying and stupid as if you were required to leave a copy of your car keys at every single parking lot you parked in.
in the UK I can walk into my bank branch and have my card replaced on the spot, so I don't really see that as a problem, unless you're abroad (and if you're abroad with only one card you should probably know better)