What is the lifespan of an iPad?

I'm curious, could you elaborate on the expected lifespan of an iPad? I've heard conflicting opinions on the matter, ranging from a few years to over a decade. Do manufacturers typically provide any guidance on how long their devices should last? Additionally, how do factors like usage patterns, software updates, and hardware durability impact the overall longevity of an iPad? Understanding these aspects would help me make a more informed decision when considering a purchase.