Hiding the tool bar / showing page thumbnails by default

Add my two cents here.

If I remember correctly, the last version of the Reader simply could save the settings.

I don't mind if you don't add new features, but why would you cut the features that the old versions have? Driven the users away?

Adobe just WILL NOT do this. EVER. I've been messing with it for years. A few times I was able to delete files in the program folder and get these to disappear but EVERY version has some new problem with the defaults. I don't need the tools section, I only use it as a READER like the name says. Also it never keeps the proper save location. I have to navigate to my specific folder every time.

This is just the way Adobe does business. Make stuff inconvenient. Watch people complain about it for years. Act like they dont see it. Never allow people to do simple things that Windows 98 was capable of doing. How hard can it be to save defaults when you close a file? Or even maybe just put a menu item that says Save settings as default. EVERY current program used in business has this capability because everyone uses things differently. Its like Microsoft office forcing you to use the Paperclip guy by default.....get with the times. Its 2015 here folks. Uggh.

To close the tools pane on the right, just shift + f4.

I would also like to know how to disable the side bar (I presume this is a tool bar?).  It is annoying as heck to have this stupid thing open all the time.  I cannot find a preference to hide it automatically.  I don't want it open every time I open a PDF.

I'd also like to know about the Thumbnail problem - it seems every time a new Reader is out the PDF thumbnails don't show up - the previous methods don't work anymore either!