Possible answer:

Grandfather's preferences about flying

My grandfather has never flown in a plane before, but it is unclear whether he wants to fly in one or not. Here are some possible reasons why he might or might not want to fly:

Reasons why he might want to fly:

- Curiosity: He might be interested in experiencing air travel and seeing the world from a different perspective.
- Convenience: He might need to travel to a distant place quickly and easily, and flying might be the best option.
- Adventure: He might be an adventurous person who enjoys trying new things and overcoming fears.

Reasons why he might not want to fly:

- Fear: He might have a fear of flying or heights that prevents him from feeling comfortable or safe in a plane.
- Cost: He might find the cost of air travel too high or not worth the expense.
- Health or age: He might have health or mobility issues that make flying difficult or impractical, or he might simply feel too old to bother with flying.

Using "either" or "neither nor"

To answer the question of whether to use "either" or "neither nor" to describe grandfather's desire to fly, we need to know whether he wants to fly or not. If he wants to fly, we can say:

- My grandfather has never flown in a plane, but he wants to fly either for curiosity, convenience, or adventure.

If he does not want to fly, we can say:

- My grandfather has never flown in a plane, and he does not want to fly neither because of fear, cost, or health/age concerns.

If we are unsure whether he wants to fly or not, we can use a conditional statement:

- If my grandfather wants to fly, he might do so for curiosity, convenience, or adventure; if he does not want to fly, he might avoid it because of fear, cost, or health/age concerns.

Either