I quit doing my own by hand because one year I forgot to copy line 13b of form 123a: to line 26d of form 987d... The software does this automatically for me. I generally think software is slower than doing everything by hand (
I use TaxAct, I don't know how turbotax is different) because of all the stupid waits while it asks questions that don't apply (retirement income...).
New Jersey used to have a PDF form with JavaScript that would copy around all the duplicate values automatically. The only annoying thing about it was that it only worked in Adobe Reader. This year they went to a poorly designed plain PDF form that only let you fill in individual digits for each line item, with tabs needed to shift each place value.
