Just avoid being trigger happy. 50,000 clicks is a lot and before you reach that, you might sold it already. Some said they reached more than that before the DSLR broke down. Another thing is that the shutter can be replaced and its another 50T clicks or more. Other models have higher estimated actuation limit. just my 1 cent advise.
it's shutter actuation count, this is more like a shutters life span. if you bought a brand new camera then you have no problems with the shutter as it is fresh, you usually look out for it when you're buying a second hand camera, standard DSLRs today have 150k shutter actuation count.
you can also check your camera's actuation count by downloading a software (forgot the name)