How does PoW waste resources?
Securing the network with a technology that has to use lot's of electricity insead of POS that doesn't require any is a good example of wasting resources. It isn't innovative to use a expensive way to do it if you already knew a better one to do it for free.
Your argument is invalid, since it basically says it's impossible to waste resources at all.
Remember we are talking about securing the network, not distributing new coins to anyone willing to work for it. Once blockrewards decline POW won't do that anymore and it's 100% wasteful while POS doesn't cost anything at all.
When looking at POS you seem to miss the point that there is no new wealth generation. If we would add a zero to every dollar bill, bank account,wages, etc nothing would change. Noone would be richer or poorer, in fact nothing changes. Even a 10-fold wouldn't make a difference, so 1% per year isn't even worth mentioning in term of costs.
People sending funds loose fees and interrest, but it's these people that need a safe and non reverseable network. Someone holding a wallet doesn't need that once it's in the blockchain. Why should someone else or all pay for them the efford to do the work.