If you buy with us in dirty fiat, we directly convert it into pristine bitcoin. 
You do understand you're sharing all your data with a payment service provider, bank, third parties and that data is stored centrally in databases for the next couple of years?
Are you ok with your personal data sitting in databases with a lot of people (and maybe soon some hackers using AI) having access to them? 
Use bitcoin for payments, preserve privacy, help merchants with cheaper and faster settlement.