Don't Install iOS 13 Beta If You Can't Stand Bugs
If you can't stand dealing with bugs, performance issues or potential security issues, you should probably avoid the iOS 13 beta.
While iOS betas can be used on a primary device, we highly recommend using the software on a secondary device if you have one. Apple agrees.
In its Beta FAQ Apple "strongly" recommends installing iOS beta software on secondary devices rather than primary ones.
The current list of iOS 13 beta problems include broken apps and services, bad battery life, issues with Bluetooth/GPS/cellular data, and more.
Apple will refine iOS 13 with new beta releases but, again, future betas will come with their own collection of problems.
And while you might be able to fix some problems yourself, others will require a fix from Apple itself. Some problems might even stick around through the final release.
If you depend on your device to get through a day at work or school, you'll probably want to stay put on iOS 12. Especially now that the official release date is close.