I thought I had an OK collection of chisels to serve my needs a 1 inch roughing gouge a 1/2 bowl gouge a round scraper and a hollowing scraper. In total I have maybe 5 or 6 tools that I use.
Then I saw a turning demo at woodcraft that the person giving the demo had maybe a dozen to 20 different gouges and scrapers out. I did not stay for the entire demo so I don't know if all of them were actually used but I begain to wonder what others had in their collection.