The answer to 'why is my hardscaping' is that there could be several common issues causing problems with your hardscaping, such as settling, cracking, or damage from weather and use. Symptoms may include uneven surfaces, cracks, crumbling, or other visible signs of deterioration.
Some common causes include improper installation, poor drainage, soil erosion, freeze-thaw cycles, and heavy foot or vehicle traffic. The solutions can vary depending on the specific problem, but may involve repairing, resurfacing, or replacing the hardscaping materials.