I'm sorry to hear that (I was fortunate to move AWAY from KC about 6 years ago).
Not much right around KC, but you do have Lake Tanicomo, Blue Springs Lake, & a couple lakes north of the city that I forget the names of. They're mostly overrun with pleasure boaters & jet skis during the summer days.
Truman Lake has some decent fishing, and is not too far for a day trip. Good luck, and try not to be too miserable out there