There is a
ton of trusted third parties involved. You're trusting:
- The KYC of your exchange, and any exchange in the coins path
- The wallet you're using
- The recipient to provide the correct address
- The exchange rate
And you're trusting all of that hasn't been tampered with, which involves even more trusted parties.
It requires an order of magnitude less trust to send cash in the mail. It's cheaper, too.