For me, my cards go from my wallet to the cashier, then back to the wallet. Online orders are done through a disposable card number. But my fear with magnets

For me, my cards go from my wallet to the cashier, then back to the wallet. Online orders are done through a disposable card number. But my fear with magnets has always been removable media. But since we are way beyond the days of floppies, and USB stick, CD/DVD etc aren't affected, I guess I should work on removing my personal fear of magnets now.