[bamster]

[ooosh]

Simpler than its IUPAC name.

[orgopete]

Simpler than its IUPAC name.

Agreed!

Example 1
Borneol vs 1,7,7-trimethylbicyclo[2.2.1]heptan-2-ol

Example 2
Cholesterol vs (8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-((R)-6-methylheptan-2-yl)-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol
(No, I didn't figure out the IUPAC name, I used ChemBioDraw to do it. However, this does illustrate why a common name might be preferred instead of an IUPAC name.)