I kinda ruined my my mom’s afternoon when I told her how fucked up Thomas Kincade was IRL. She has a big ass TK original painting over her fireplace. 
[https://en.m.wikipedia.org/wiki/Thomas\_Kinkade](https://en.m.wikipedia.org/wiki/Thomas_Kinkade)
They constantly loose value due to the negative rollover yield of the underlying future contracts. Any etf based on a leveraged securities is going to degrade over time. If you look at the nat gas future chart and check the "adjust for contract changes" box (settings > futures on thinkorswim), it looks a lot more like the ETF charts.
Their debt is less than years revenue. I have a mortgage that is more than 2x of my yearly revenue so i dont see the problem here. So while number is huge its ratio is nat that bad (as user below said - its all relative man)
Net profit for regular person if compared to company would be monies you can put into savings account after all your expenses are paid, including food, mortgage payments, car or whatever. For most people "net profit" is from 0 to 10% of their revenue.
Their debt is less than years revenue. I have a mortgage that is more than 2x of my yearly revenue so i dont see the problem here. So while number is huge its ratio is nat that bad