If i sat down with 100 people. All of them are paying extra on their low interest debt mortgage, student loan, whatever. I explain instead of putting $1000 per month towards that debt put that $1000 in an investment account. After 5 years you'll increase your net assets by 20k-30k.
Fast forward 5 years and I'd have maybe 5 people with a net benefit of 20-30k as planned. The other 95 people somewhere between break even in net assets than if they'd paid their debt and next to nothing in their investment account.
Numbers don't really matter. Use $100 instead of $1,000 and it's the same thing.