Survival instincts. If everyone and everything around you (your job included) is shouting "use AI" it's difficult to take any stand or introduce caution. I think it's less about being excited, more about hoping to not miss the wave and get "left behind."

I think both groups (pro vs anti) will be a bit surprised when the long-term data shows productivity gains were modest on average and producing quality software still needs care/human attention, even with the support of advanced, frontier models. Same job as before, now we just have a power drill instead of a screwdriver. Some people build houses that stand for hundreds of years, others less so.