Agreed.
I would think that a bigger block of time (more than 2 weeks) off would rejuvinate you and help you have a more positive view towards your work life (reduce the burnout). It's pretty depressing looking forward to a week off here and there, and maybe the occasional 3 day weekend. Burn some of the time with family, and spend some on the significant other, and you have little remaining for personal usage.
Most US companies can't afford to offer large amounts of paid time off. And, for many US working stiffs, the idea of taking unpaid time off in any large amount is unrealistic (if its offered), due to debt and lack of liquid savings. Up until about 2 years ago, I felt guilty taking time off beyond my paid vacation. Now, I would prefer to have the time off in lieu of the money I would make.