With a PC, you can go to the folder containing the program and poke around. With the Mac, that isn't going to happen or be easy.
Actually, it's not quite that bad.
You
do need to have Admin privileges, but who doesn't have at least one Admin account set up?
If the app you want to delete/rename/move/etc. is one you added yourself, just do what you want to with it. That's one reason why I
never recommend anyone to use an "app remover" program.
If it's an app that comes with the machine (installed and updated by Apple), you can still do what you want with it. But you will have to provide an Admin password. What you do with it is up to you, but doing something without knowing the consequences will be just as bad as doing that on a PC.
I don't care for the new versions of the iWorks apps, so I put them in a separate folder/directory. I keep the old ones in another directory along with all the documents I've created with them. This just makes it a bit easier to drag one of them to the old app rather than the usual 'double-click' to open them. At least Apple didn't hide/delete the old versions when the new ones came out.
As for "No Permissions Repair" in
El Capitan , if it's such a bother, turn of SIP. Not advised, but it's certainly possible and not difficult, at all (even if you've never used a Windows PC
). However, the permissions repaired will still only be those for Apple files & apps and you'll lose a good bit of security. OTOH, some people use an Admin account all the time and leave the machine available to anyone in the house, including the cat!
edited to hopefully sound less like a 'fanboy'!