A lot of it is the due to high expenses at this stage (SISP debate aside), see https://ethgasstation.info/ https://ethgasstation.info/ for example. Gas price is

A lot of it is the due to high expenses at this stage (SISP debate aside), see https://ethgasstation.info/ https://ethgasstation.info/ for example. Gas price is so high that adding any complex logic on chain is often really costly--there are few real world applications that merit this, and certainly for micro txs it's not ready. That will probably change but I think it will take 5-10 years before tech improvements + adoption start to really move the needle.