application of statistic
Imagine you work developing electronic devices, and you need to verify how many of the devices developed are working ok, and how many of them are malfunctioning. We are talking about 5000 devices, let's say. Are you going to test all of them one by one?
Here comes the statistics, where you take samples of let's say 100 devices and test them. Then you can set the parameters that define the devices as working. And then you can ESTIMATE (magic word related to statistics) how many of those 5000 will be working properly.
This is just one example.
I studied Electronics Engineering, specializing on Telecommunications. Estimating the traffic usage in a network needs statistics, because you cannot know for sure the traffic coming from each user, but you can estimate an overall.
Also on telephone networks, it is a MUST to know about statistics (talk about Poisson, Erlang, etc...)
So, maybe if you don't see many reasons now, you will be seeing them along these coming years