Movie trailers are baits too. Every product/service has a "clickbait" why can't articles have them too?
Magazines with hot women on the covers are buy-baits too.
The point of writing stories is so that people read them. If as long as the content is satisfactory, clickbaits are more than logical.
People are just used to traditional news concluding everything in the title. What if we've always only clickbait titles? Would you feel the same way? Our next generation will probably see this as a norm.