will do 和 would do  除了表示“将来/过去要做某事”之外，还可表达“人的意愿”。will 和 would，翻译为汉语就是“愿意；情愿；甘心”。

I wonder why he will go to help her.

I wondered why he would go to help her.

网友结合上面的讲解，去理解你的问题。

Looking about him, O'Donnell wondered why anyone - wealthy or not - would choose to live in such surroundings.
【翻译】奥唐纳环顾四周，想知道为什么任何人——无论富有与否——都愿意选择生活在这样的环境中。