My Experience Running Facebook Ads: It’s a Desert Out There If You Don’t Research - MFI Series1, #14

Every business needs some form of advertising and marketing, and finding what works best for you is critical. Every platform has its quirks, and you need to take a deep dive to understand the scope of each one thoroughly. I started advertising on Facebook when my content sucked. Therefore, my ads also were terrible. But, hey, we all need these growing pains. To create better products and ads, I began to read books on writing, design, advertising, marketing, etc.
It worked; however, I wasn't satisfied with the results for my business. In the end, I want to grow an audience, not sell products. I want to build organic traffic, and I do that by releasing a ton of content. However, your goals may be vastly different from mine. If you take the time to learn Facebook (or other platforms), you can create ads that make you money. At that point, your advertising would be in an infinite return.
You'd be printing money.  The only question is, are you willing to spend the time, energy, and money to get to that point!