I had more than one person told me "I have no patient for watercolor". And I always find it odd because I thought that watercolor is one of the fastest medium out there. I can usually finish a painting with one sitting (about 2~3 hours). While with oil and acrylic it usually requires more time for one painting. But now I think I can understand what do people mean when they say they don't have the patient for watercolor - It's not the about the time it takes to finish the painting, it's about the time you get to work on it. Because acrylic dry very fast, you can pretty much paint right on top. And even though oil paint dry very slow, you can always lay thicker paint on top without waiting. But when you put down a wash in watercolor, you need to wait for it to dry completely in order to paint the second layer on top.