Sensitif sikit boleh tak?

A friend posted a FB status message sounded like this:

I used to be healthy, fit and into sports. But I wished to be thin. Now I'm thin but I'm not healthy, unfit and can't do sports. Becareful what you wish for..

And I gulped down when I saw the first reply sounded this way:

that's so true! my late sis in law wanted to be thin.. then allah granted her wish but she got cancer, died after 2 years of treatment.. its almost a year she passed away..

p/s : u sakit apa skrg ni?

I do not know what kind of health issue this friend is having and I´m not close enough to her to ask her directly about it. But when I saw the first reply, all I can think "wow, this person really do not have heart or brain!"

What a best way to soothe a person who´s having health issue! Mentioning about death and cancer? What if this friend of mine is actually having cancer?

I wonder how come some people can be so insensitive? Why can´t , if you don´t have anything nice to say, you just don´t say anything?

People, please...learn to be sensitive towards other people´s feeling...