Yes. I'm not sure if you were being sarcastic, but I'll assume not.
I don't know if anything is genuinely always positive and even if it were, I don't know if it would be very intelligent (or fun to interact with). I think it's helpful to cry, helpful to feel angry, helpful to feel afraid, and many other states of being that cultures often label as negative. I also think most of us watch movies and series that have a full range of emotions, not just the ones we label as positive, as they bring a richness to life and allow us to solve problems that other emotions don't.
For example, it's hard to lift heavy things while feeling very happy. Try lifting something heavy while laughing hard, quite difficult. It's hard to sleep while feeling excited, as many kids know before a holiday where they receive gifts, especially Christmas in the US. It's hard to survive without feeling fear of falling off a cliff. It's hard to stand up for what one wants and believes without some anger.
I worry that language and communication may become even more conflict avoidant than it already is right now, so I'm curious to see how some of these chatbots grow in their ability to address and resolve conflict and how that impacts us.