So, have I failed as a parent, (how often do you hear that said?): YES.
Comforting...
"For I the Lord your God hold your right hand; I am the Lord, Who says to you, Fear not; I will help you!"
Cast your burden on the Lord [releasing the weight of it] and He will sustain you; He will never allow the [consistently] righteous to be moved (made to slip, fall, or fail). Psalm 55:22


I've seen others being beat over the head with this, (see Title), and I have taken some heat for it as well: "Wanton waste brings woeful want, why are you intentially wasting the _____ ?" Or; "I never spent a dime on _____, but look at brother _____! He doesn't even have a job and has to depend on others for his finances. Look at him blow money on _____!"
I certainly understand that point of view, (except when it's directed at me - of course). After all, I'm not independently wealthy, and don't know how I'd make it without finding some spending shortcuts. But, I keep seeing the Lord take care of things like this without shaking his finger in someone's face, or talking behind their back. He usually just takes care of the needed supply regardless of someone's "lack of responsibility". Years go by and there is no change in the behavior and no "hard lessons" from the Lord. Could it be that we have the wrong point of view yet again? Could it be that our thoughts are not His thoughts?
Isn't it noble not to waste resources and pinch pennies as much as possible; especially when it comes to the Lord's things? Well, all things ARE the Lord's things. Yes, if we waste, there is a price to pay. But emphasis on pinching pennies might just result in something else to be proud of.
We all have a good dose of ignorance. Could we, or someone else be ignorant of some of the best money-saving schemes? Wouldn't God provide anyway if we are?
Then, there's raising kids:
I've never heard the kids talk down other kids for wasting something, and they waste a lot. Maybe they remember that they do the same thing, or maybe they have faith that God will help them regardless, because He is good. Maybe that is what is missing here.
What will it be like at the Judgement Seat of Christ? Our works will be presented and tested with fire. I can't help but believe that each of us will stand individually with the presentation of our works. Part of the structure of our works will look good and some will look suspiciously flammable. Someone will set fire to it and all of it will flame up rather dramatically, including the stuff that looked good. What a bonfire it will be! Truly disappointing. After the fire dies down and we stand there looking out from under our singed eyebrows, creased with disappointment, we'll probably see a beautiful, golden inner structure; still standing. We'll say, "I didn't do THAT!" and we will be right. We will stand there in open-mouthed astonishment at what the Lord was able to accomplish through us in ways that we were not even aware of.
Fear of anything except the reverent fear of God is a sin. Putting it bluntly, I must love to sin because I fear something so often. Early memories of school were full of fearing what might happen. I used to get nauseated in the mornings at school because of it. Now, I catch myself waking up on Monday morning having lost my confidence in Him and finding something to dread. Talk about out-of-control sin! Fear is a sin that we seem to be free to admit to; maybe because almost everyone so easily succumbs to it. However, it is most serious in the eyes of God. The Israelites who feared had to wander 40 years until they died because of it. I'd better be letting Him work it out and trust Him instead of holding on to it!