Grumblers deserve to be operated upon surgically; their trouble is usually chronic.
Grumbling is the death of love
You're so caught up in grumbling, complaining, and seeing what's wrong that you have no energy or time to appreciate what's good.
He was kindhearted, in a way. You know the sort of kind heart: it made him uncomfortable more often than it made him do anything; and even when he did anything, it did not prevent him from grumbling, losing his temper and swearing (mostly to himself).
Constant complaint is the poorest sort of pay for all the comforts we enjoy.
I have always been a grumbler. I am designed for the part - sagging face, weighty underlip, rumbling, resonant voice. Money couldn't buy a better grumbling outfit.
It's not a question of God 'sending' us to Hell. In each of us there is something growing up which will of itself be Hell unless it is nipped in the bud.
Hell begins with a grumbling mood, always complaining, always blaming others.
It's a great comfort to some people to groan over their imaginary ills.
What the Lord wants is that you shall go about the business to which He sets you, not asking for an easy post, nor grumbling at a hard one.