I made a dating site back in the day. The launch couldn't have gone any better. It went completely viral, got featured all over American TV, I had 4000 users overnight.
And... I made just $40! Why? Dating sounds cool. But it's an incredibly hard market to make any money in. Especially as a bootstrapper.
Let me give you another example. @dantelex (sharp guy) launched a site called Barttar last year. A site where you could trade (or barter) your skills with other people. It sounds cool. It did well on Product Hunt. Fun to talk about at the pub. But it's just not the type of business that will make money.
Why? Just like dating, it requires a minimum threshold of users before it can provide any value. Facebook are in a position to launch an exchange platform. A bootstrapper isn't.
A lot of people are ploughing on with styles of business which are incredibly hard to make work. Below I've tried to think of a few styles of business which are suited to Indie Hackers:
Don't force yourself into this mould. There's more ways than the way to do it. Most importantly: play to your strengths