What benefits does paying with cryptocurrencies give my customers?
No need for a bank account.
No need to give out any sensitive information (such as credit card details, name, address, telephone number, e-mail address, etc.) to merchants.
Much cheaper (almost free) and friction-less transactions, regardless of the sum transferred - you could send a million USD overseas on a Sunday at night in 10 minutes for less than 0.0001% of the amount.
No possibility of money being frozen or transactions being blocked.