I entered the Printed Village nautical scarf design competition last week. This was a last minute decision, but I had some free time and I had not used Illustrator in a few weeks (as I have been mainly Photoshop based recently).
I have put myself in positions in the past where I took on an illustrator based project, but hadn't done much in the program for years. It was a rough few days of re-teaching myself skills that I should have been building upon in those years. Since then I have made it a rule to keep myself familiar with both photoshop and illustrator, no matter which I am favoring at the time. Technology is advancing so fast, it is too easy to fall behind.
I don't expect anything to come of my entry, but I enjoyed the time and I think it has inspired me to use illustrator in more of my day to day designs.