Everyone should try and be a little wise because wisdom helps channel inner peace and wisdom tends to be way smarter than just pure book gibberish! In other words, if no one had wisdom, we would probably all be dumb and stupid!
Yes. Knowledge and power combined are formidable, but not complete. It is often said that: "While knowledge is knowing that a tomato is a fruit, wisdom is not putting it in a fruit salad". A god who knew and could do absolutely anything could still lack the common sense to achieve its goals if it lacked wisdom.
That's like saying that, because we have Steven Hawking, we don't need to give people a science education.