There are few things as anxiety-inducing as sharing putting your labours of love for the world to see. It's easier when it's something fun or for someone else. You're less personally invested in it and you can think more logically.
Being a maker requires you to embrace that anxiety. Unless you have an established audience, you pretty much have to make in public to potentially find success.
It takes a lot of courage to share your work with the world. If you never do, you're spared the criticism that could crush you. Then there's the waiting for a response, or no response, or a huge response and now you're overwhelmed.
Either way, anxiety can find you. Bringing every scary permutation to your mind.
Artists have experienced these fears forever but it's amplified for makers. The internet accelerates everything, reactions are instant, debates are heated, and your fears are bigger.
Anxiety is usually driven by some deep fear we all have. Of the unknown and the potential pain. It's easy to say just get over it, but the anxiety doesn't really leave anyone, we just learn to live through it.
How do you deal with these anxieties? Do you ignore it? Do you quit?
It could come down to your personal goals. When you're working on something for yourself and your own goals it's easier to not be as concerned about what could go wrong. It's easier because you get to define what's good rather than worry about everyone else's opinions. Of course, you want it to be found, but without the burden of that anxiety, you might spend more time sharing than worrying about sharing.