What is faith? Why criticise God?

a family member died of a terrible cancer

Over a period of a few days late last month, one of my sisters noticed her husband becoming increasingly confused, so took him to the hospital. An MRI revealed he had a very aggressive brain tumour, two actually, and four days later there was a third one. Treatment was not recommended, and surgery ruled out. Less than three weeks later he passed away. It has been a nightmare for my sister. Please pray for her. Thank you!

So, a question for those who are vocal in their criticism of God, saying bitterly that a good loving God wouldn't allow evil and bad things to happen.

Do these same people ever pray sincere humble thanks and praise for all the good wonderful gifts they do enjoy in life? Food, shelter, etc. How many regularly say grace before meals or thank God for healing their illness?

I'm particularly curious about folks who criticise a God they do not believe even exists. Then there are those who lose their faith when adversity hits. They arouse my interest even more, because I assume they think life ought only to consist of pleasant convenient things. That disease, accidents and such ought not to affect them or their children because they believe in God. Are such folks on their knees thanking God when life is going really well?
I actually know of people who stopped attending church because a family member died of a terrible cancer and they felt their pleading prayers went unheard. Does that mean if demands are not granted, God can be disregarded?

It's about faith and being willing to let God be in charge, whatever happens. Otherwise it's not faith at all. God's healing may not be our idea of healing. Our part is to trust and accept.

Even David had a few complaints during the hard times. Some of those psalms aren't so bright and chipper. And that was coming from the man after God's own heart.

Getting upset isn't a sin.

That is extremely hard, I am so sorry and shall pray for her. She must be utterly numb. At this time prayer is for comfort and strength to cope with this tragic situation.

The question of suffering is THE most difficult one and it's something for which i don't know what to say most of the time except to mention Jesus came here to suffer for us and other cases such as Paul asking for relief for his thorn on his foot which God never took away even after Jesus showed himself to Paul.
I try to tell people who suffer that there is Hope with God and sometimes we get a Miracle and sometimes we don't. We don't know how that works but Jesus promised us that HE will return and we will be in HIS presence again.

The question of suffering is THE most difficult one and it's something for which i don't know what to say most of the time except to mention Jesus came here to suffer for us and other cases such as Paul asking for relief for his thorn on his foot which God never took away even after Jesus showed himself to Paul.
I try to tell people who suffer that there is Hope with God and sometimes we get a Miracle and sometimes we don't. We don't know how that works but Jesus promised us that HE will return and we will be in HIS presence again.