It doesn't matter if you're building an app for money or for yourself, you should always be focusing on building the most important and most valuable features. In the early stages, login is not an important feature, and it can make initial development slower, so put off login.
Once you're ready to implement login, check out my video on using next auth with next 14 https://youtu.be/t8HQbx2EDeQ
- 0:00 Intro
- 1:14 App without auth
- 2:24 Fake auth
- 12:26 Conclusion