> Why did clients implement this? People have processes that put files in standard places and require users to email them the files. Yes, the average HN reader

> Why did clients implement this? People have processes that put files in standard places and require users to email them the files. Yes, the average HN reader could automate away any need for the average process, but it exists and can't be changed. Email client developers go ahead and implement niceties without considering the risk.