Insulation can lose its effectiveness as it ages and if your home ins't keeping in the warm like before - maybe it's time for a replacement. Other reasons like mold or critter infestations may warrant a removal.
Removals can be tricky and hazardous, so it's important to have the correct tools and protective gear.
Removing and replacing old insulation can improve indoor air quality and air circulation.
Old insulation can pose health hazards such as mildew and mold. Insulation can absorb allergens and moisture, it can also become hazardous from pest infestation.
You may qualify for Tax Credits and other incentives made available to those who include energy saving insulation.