It gets better in season four...but I think season three was a reflection of the post-9/11 era ENT was made in.
If it's any consolation, though, there's a line in an early season four episode in which Archer finally admits that he lost something (of himself) during the Xindi mission.
For all of the fan complaints about Archer, I think his character was perfect for ENT. He made the mistakes that later captains like Kirk and Picard would learn lessons from and avoid, IMO. Season four also addresses the Vulcan issue and shows that they haven't always been the same.