Redistricting in PA

Why is there a need to split Horsham Twp. as part of PA re-districting. I have lived here for 18 years and the major issues here such as the joint base, water treatment, development, etc. are specific to this area and there is no reason to further divide the residents. It was unity that got these issues addressed in the first place. Progress has been extremely slow and now the state government wants to reverse it by dividing the legislative responsibility in Horsham. If residents such as myself have to search for a benefit, it's because the reasoning is extremely flimsy or non-existent.