Take it from someone that used to run a store that accepted a lot of credit card transactions. Even though BitCoin is a bit slow to hit 6 confirmations, as a merchant (not an average user) you still get your money way faster than you do if someone is paying with a credit or debit card. A normal merchant has to wait 24-48 hours depending on the time of day they batch out their credit card terminals before their merchant service provider will ACH them that money and it lands in their account. If you're doing online sales then chances are you're going to loose 2-3% of that transaction to the credit card company as well.

I'd rather accept BitCoin or another alt-coin any day of the week.