Depreciation Schedules are already great value as they typically provide an excellent return on Investment. Quite possibly the highest return on investment of any investment property related expense. Depreciation Schedules are even better value when the cost is also 100% tax deductible.
Depreciation on your investment property is just compensation for wear and tear. Buildings wear out. So do stoves, carpet, etc – especially with tenants. So you get to depreciate them, or write them down, a bit every year.