This might sound like a stupid question but I am a beginner so here goes. I was really excited when I learned about the cadd9 chord. Wow going from G to C is so much faster. Are there certain times you should not use the cadd9 (like a certain strumming pattern that might just catch the lower few strings) or am I a crazy beginner asking a stupid question? Or maybe lazy and want to keep doing it the easy way. Any help would be much appreciated.

Donna