Wise But Oblivious
Solution 1:
Jaded. Bored or lacking enthusiasm, typically after having had too much of something. https://en.oxforddictionaries.com/definition/jaded
Or, as Zan700 suggested:
World-weary. Feeling or indicating feelings of weariness, boredom, or cynicism as a result of long experience of life.
https://en.oxforddictionaries.com/definition/world-weary