Our first house dated to the 1920's, with attic post wiring. However, the worst upgrade was by an owner/concrete contractor who didn't believe in ground wires apparently, nor boxes when a tape splice sandwiched between drywall layers seemed okay to him. I had to re-do 2/3 of the wiring because he used modern 2+grnd romex and 3-plug outlets - he just clipped every ground wire inside every box and never connected any inside the main box. Willfully ignorant.
Codes are not a liberal conspiracy to rip off patriotic homeowners. Many grades of structural fasteners exist for a purpose, such as the Simpson nails and screws that are accepted for use in plates, hurricane straps, etc. They meet both strength, shear, corrosion, and brittleness criteria that unknown fasteners might, but easily might not meet. If you do your own work, whether or not you get a permit or inspection, you could be considered criminally liable should your work fail and cause harm.
You, but more important, those who come after you will either live, or not, by your lack of concern over proper structural soundness, and I would hardly brag about willful ignorance. Should your place be fully inspected during a sale, full disclosure will either make you out as a liar, or result in a broken contract. But hey, so what if your roof blows off, or collapses under snow, etc?