In my experience the paper forms are so much easier and more reliable than using tax software. A pen and a form just works. No account logins and passwords, no janky UI, no advertisements, no issues saving your progress... The instructions are much better too. Each box is numbered and there's an instruction manual detailing what to put in that box. If you make mistakes the IRS will simply correct you.
The problem I had with the papers is they don't tell you when you need to have another form. Guided question software will ask questions to determine if you need forms.
