Canon Ixus Repair
How many pictures are too many to take a camera?

I bought a Canon IXUS 70 and I wanted to know if there are certain rules good use of the thumb or are just general guidelines to follow to secure my camera takes me a long time. Do you have many pictures from the camera deteriorate more quickly? I think of it like a car, the more you drive faster depreciates and breaks. Is it the same camera? What about the cameras, like cars and motorcycles, maintenance and repairs after a certain mileage (photos taken)? What if you have taken lots of photos, but the camera it is not broke, do you need for your service because the quality of vaccines diminishes with use? or just fix it if it breaks and not beyond repair? Is it bad for the camera to take lots of pictures? If you take a bunch of pictures (whatever that is) in quick succession or in a short period of time, is this bad for the camera? Is there a rule of thumb of what a lot of pictures or photos are too?

Rarely receives more than 75,000 performances of the digital point and shoot. But if I shot in the rain or snow and I'm in a sand dune. Hard on my cameras. My Nikon D50 action but there were 100,000 work yet, however, had a doubt, a change in the sound of the shutter time.