Much of the advice people give is pretty much coming from their autobiography. Gene Simmons has had money for most of his life. So, of course he's going to say that money is important.
With that said, money means different things to different people. There was a Rutgers study done on money and happiness and what they found is that $70k a year is the cutoff point to happiness. Anything after that and someone's happiness in relation to money doesn't go up much. It's probably true. Think about it. If you have your necessities covered and you have a nice sum of money in your checking/savings life is pretty good. But, here lies the danger with this. In a way it's kinda delusional because when the economy gets slammed and you lose your job, making $70k a year is actually awfully low. Look back at 2006-09. Many people in upper management were making six figures plus. The great recession hit, many lost their income, and they realized a bit too late that $100k was nice but it just wasn't enough. Not for real sustained wealth.
I had a great learning experience 10 years ago. My uncle who was a millionaire came down with Parkinsons disease. Now, he had the money on hand for the best treatments. He even donated $50k to Parkinsons research at the hospital near Drexel Hill, PA. He had a maid to take care of his ailing wife. He was getting 3 messages a day. I was helping him. He had 2 other helpers as well. In home care alone, he was spending thousands a week. His wife is now living in one of those retirement homes. It's $10k a month. She gets every need met, because she is able to pay for it. Many of us are going to have to put the burden on our kids, or we will be put in some kind of state hospital until we die a painful death. That's the reality between not having enough money and being wealthy. IMO, we underestimate what we will need for health emergencies and during the last stage of our lives.
Finally, time affluence is a much more predictor of happiness than financial affluence. You don't get back your days. Once they're gone. That's it. I'd rather be 21 again than be worth $10m. Money can always be made. Not time. It's gone, that's it.
About those lottery winners who go broke. Getting more money isn't the answer. Financial literacy is the answer. You can give $1k to someone whose financially illerate and they'll just blow it on sh*t. Give $1k to someone whose financially savvy and they'll invest part of it and spend the rest wisely.