I can, but most of us prefer € to fight against currency devaluation. Unfortunatelly, Bitcoin is not so popular, although we have bitcoin ATMs in every bigger shopping centers.
Discussion
So you can have a euro bank account and spend euros at stores too? I guess that makes it a little easier, especially if you're earning euros from other countries in the zone. My guess is if you have a "stable" currency you don't see the value of Bitcoin yet, it just masks the pain a lot longer than these currencies do
Yes, we can use € bank account, bank cards, almost everybody has bank accounts, cards, Revolut, Wise and similar fintech apps, and every store have to accept card payments.