Each of it has benefits and disadvantages. I would say it depends on how you care for it and where you need it.
For example if you would (and could) make payments for daily purchases it's quite different than storing value for your savings.
Of course, cash is more suited as a currency while Bitcoin is more suited as a store of value.
There are still some unforseen issues which can affect Cash and / or Bitcoin but in general I would say Cash is better for purchases and Bitcoin is better as a store of value.
I do international trade, and for me, bitcoin is more convenient, of course I think security depends not only on bitcoin itself, but also my hardware wallet. Banking For me, security is a factor that I ignore, more of a habit.