I read an article the other day...it was commenting on the tendency to use heavy yarns to knit a sweater! Even though they are appealing and quick...the article continued: "It's been found that sweaters knit with lighter weight yarns are worn far more than the bulky sweaters. They are the sweaters that you will reach for the most."
So I had to stop and think...
Anyway, I really love your cardigan! I know you will wear it often, and for many years!