Final answer:
The speaker describes 'like' as a 'semi-demi goddess' primarily to emphasize power.
Step-by-step explanation:
The speaker describes 'like' as a 'semi-demi goddess' primarily to emphasize power. The speaker compares the person being described to a goddess to highlight their extraordinary power and influence. The use of the adjective 'semi-demi' suggests that the person's power is not fully divine but still significant. This emphasizes the aspect of power over other options such as beauty, wit, and fragility.