Ultimately, it depends. If you can get a 12-hour Delta One Suites flight for less than 50,000 points plus a couple of dollars in taxes and fees, you’d essentially be getting a $5,000 flight for free.
Simply put, using points can make any business or first class ticket worth it because you’re not paying anywhere near full price for it! In fact, you’re often paying less than a ticket on Spirit Airlines out of pocket.