And also what happen when your dollar or euro bank account takes +30 millions in few days ? Do banks have alerts when someone's account activity is unsual compare to historic usage ?
Your account will almost certainly be frozen until you show up and convince the bank you're not a money launderer. Given the complexity of AML laws, you probably actually are at that point. And therefore the conversation with the bank might not go in your favor.
Instead, you just pull a few thousand a week for a few years, pay taxes, and leave the rest in BTC, using that to pay for as much stuff as you can/want.