TW is very close to HK, you can fly to visit. Think about those who moved to America. That is nothing for you to depress. you should be happy because you can do what ever you want to do now. Too much complain!
做得非常正確,如果語言不通及經常要人幫忙,是十分麻煩的。如果年紀是六、七十歲且身體好,做些兼職是好的,其他日子可以行山、踩吓單車,日子很快過,比每天悶在家中好得多。 The woman doesn't fly to Taiwan to visit them or move to Taiwan with their kids. Maybe her kids don't want her to. She may not speak mandarin or she doesn't want to stay in a new (strange) place for her age (aged 72 two years ago). It is not easy to for the elderlies to turn over a new life.
What about those who don't have kids? You are the lucky one who is depressing no matter you are by yourself or not. You will feel the same. unsatisfied for what you have.