Being content doesn’t sound very sexy. Why should anyone strive to be “just” content?

Because being happy all the time is not realistic. Happiness is an emotion. Just like anxiety, sadness, excitement, anger, etc. All emotions are transient. Meaning, they fluctuate, they become more and less intense. They are manageable and tolerable, even when they feel extremely distressing, unpleasant, uncomfortable, or even unbearable. The truth is, if it’s an emotion, you can bear it.