I think the key line here is:

> I also don't know how to design websites based on someone else's feelings.

That's what design is, so if you're not doing that then you're probably not a designer.

Not even wrong. Design is defined by making studied choices within the constraints of the need or purpose. Rarely are these emotional, and when they are it is merely because of a successful connection between the people and the ideas that the purpose of the design created. The emotion is a side effect of good design, not the point. Only Marketing people see design as "emotional" because they see the world through a lens of shaping human behavior through our primate genetic programming.

> Only Marketing people see design as "emotional" because they see the world through a lens of shaping human behavior through our primate genetic programming.

The word design literally means 'fate', i.e. the absence of free will. Shaping behavior is the point, making studied choices is only the means to the end.

C.f. Robert Frost's poem Design:

http://www.poets.org/poetsorg/poem/design

Evolution doesn't plan. Design that shapes behavior assumes a god-like view of the world which employed by humans always arrogates to the point of overreaching. For design to be humane, it is behavior that shapes design, not the other way around.