Waiving an inspection: never. No matter how competitive the market
it is always a bad idea; it will likely lead to the buyer's significant problems.
There are too many hidden variables, which could result in substantial costs to a new homebuyer. Crumbling foundations which have become a critical issue, radon, and arsenic in water, are examples of hidden problems that can be costly to remediate. Once you buy - it is your problem. There are some alternatives to waiving the inspections, which will let prospective buyers be competitive in bidding. The best way is to limit the purpose of the inspection to informational only. However, make sure a satisfactory inspection is a contingency for the purchase, allowing withdrawal of the offer to purchase and the deposit return. Sellers will have to deal with matters of safety no matter whom they sell to.