HTC Incredible :: Close Apps Draining Battery

I hate the fact that when i use my camera, or camcorder and send an mms or simply save a picture, that it goes back to the camera. I hit the back button, home button, etc. and of course the camera goes away. I know the OS knows that the camera is in the background now, not utilizing CPU, therefore not using up MAH, but I'm OCD about it running, not sure why. The only 2 apps i kill when i'm done are google maps, and camera. I just dont want them running in the background even though they dont have "focus" and will not be drawing any power. There are some apps that come with an exit button, which is fine with me, even though it doesn't actually close the app, and i only use ATK when something is funky on the phone and not giving me what i want, but are you guys the same way as me, or am i the only one that force kills some of the more batt. draining apps ?