Just look at Mother Theresa. She was refusing administration of painkillers to people dying in agonizing pain at her hospitals (hospices?), because she believed that experiencing suffering in this way was a part of being a true christian and virtuous person (yes, that was her actual stated reasoning). All of this was immediately cast aside as soon as she herself got debilitated with painful suffering due to illnesses, however.
I do believe there is value in suffering, but there are different kinds of suffering, and what’s being talked about here (physical) isn’t the kind that has much value.
Basically, in suffering yourself, you finally relate to what other people are going through, instead of dismissing their complaints as mutterings of inferior people.
And then maybe you will care to make a difference, if it's not too late.
Do you think it's better if people just die to avoid suffering rather than learn to live the best they can despite that pain?
Why do you say "causes"?
Agreed on the last point, but also having to beg others to get enough food/shelter to survive ... if you want that then you need to take a look at your ego.