I wouldn't say iOS is a terrible product, just that it's terrible for someone that knows how to use a computer. Apple is trying to get users that don't know what they are doing at the expense of the experience for users that do. I know I shall never buy another Apple computer if the trend continues.
Hold down Alt while clicking the Go menu to see your Library folder.
However, I reject your solution. It's my machine, I want it to be a pleasant experience to develop on, I don't want to memorize a workarounds for a bunch of trivial problems that I have to apply to every machine I use.
I'm taking the defensive position of not investing too much of my time in their products because I think they will remove access to those folders, or lock down on application installs, or otherwise make the experience wretched for me sometime in the future.
or
(sudo??) chflags nohidden /Library
chflags nohidden ~/Library