Nuclear weapons could have a better use in the future? Pray tell, what exactly have you envisioned here?

My point is that you don't know what the future holds, but it's better to know more than less. My point is valid even if I can't provide examples.

However, if you ask me to, I can imagine using those weapons against meteors headeds for Earth, or possibly aliens. We don't know.

Phew, I never thought that "it's better to know more than less" would be controversial on HN.

Lack of imagination often results in preconceived answers, to open ended questions.

The curious child takes apart an animal and learns surgery. The animal, however, is nonetheless killed.