I think what a lot of would-be entrepreneurs don’t get is the sheer scale of the global market. There are many, many billions of dollars trading hands every single day. You only have to dip the very tip of your pinky finger into that economic stream and you can make more money than you imagined. If you ever think of a product and then talk yourself out of it with “no one will buy this”, just remember that there are 8.1 billion people out there. If you create a product for $10/month, you only have to convince 0.0001% of them of the value of your product to make $1M per year.

Also, I completely disagree that OP’s product is useless or due to luck. He intentionally created something people want, and it’s actually a pretty cool product IMO.