The reason there is a confusion is because some posters did not understand the question.

The question is not whether to get USB ports or not. All new DAWs must have USB2.0 ports.

The question is whether to get a sound card that is based on USB2. And the answer is definitely NOT!!!!!!!!!!!!!!!!!!!!!!!!!!

Read the question carefully people. The real professional choices for sound cards are either PCI or Firewire (specifically MOTU)... NOT USB2.