I guess all that it comes down to is the different perceptions we have of the base classes. Whether the skills a class has are inextricably tied to a specific cultural role/tradition or just a description of skills that a character from various paths might have in common but for different reasons.
I don't immediately associate paladins with aspiring to celestialhood, they are paragons of good but that doesn't mean they want to become celestials. Heck, they could find the self-righteous high-and-mighty attitude of celestials just as annoying as they find the common thief.
For the paladin-warlock, the use of his powers doesn't have to be inherently evil, it's also the purpose behind the use.
The barbarian-psychic warrior I don't think would fulfill the image I had for that barbarian-monk but *shrugs*. Different perceptions again.
I don't immediately associate paladins with aspiring to celestialhood, they are paragons of good but that doesn't mean they want to become celestials. Heck, they could find the self-righteous high-and-mighty attitude of celestials just as annoying as they find the common thief.
For the paladin-warlock, the use of his powers doesn't have to be inherently evil, it's also the purpose behind the use.
The barbarian-psychic warrior I don't think would fulfill the image I had for that barbarian-monk but *shrugs*. Different perceptions again.