Why am I forced to login with my Adobe ID in order to open a PDF file?

Signing in each time that I need to create a file is a complete invasion of privacy. We have very sensitive information that CAN NOT be shared with the public. I believe a class action is in order. PLEASE comment 

Okay, I'm going to vent also as we all know it's a bit of a Don Quixote situation...

I am NOT on a subscription.  I purchased the "desktop version" of Acrobat Pro 2020 last year for my new machine and have 2016 on my old machine.  I would like to find a way to revert my '20 license to a '16 version.  The '20 version requires a login to use, just like the subscription and, even when I am logged-in, it can take upwards of 5 minutes to open a file from my hard drive that should be instantaneous.  It was so annoying at one point that I also installed the "free" reader, which was faster for a while, but they both have issues.  The reader program is constantly presenting "ads" for additional services with no way to disable.  That is, all the "tool icons" open with every file even though they are unusable.

Whats' more, the functionality of Acrobat is actually worse than the '16 version.  I had a good system for "signing" and securing documents, but now I can't even figure out how to use my actual signature, as they've changed that whole routine.

Unfortunately, I think we are all yelling into the wind.  As much as I would like to throw the Adobe products into the trash, I need to use them.  This is just one more cost that we are forced to endure and then pass on to our customers, which makes life more expensive for all of us.  It should at least make things better, but it does not.

This is so incredibly fustrating especially when one is dealing with a time sensitive manner. I do not think I can use strong enough language to describe how much I dislike this.

This is an example of the worst kind of software behavior. Adobe should be ashamed they ruined a great product with this BS. I don't want to use your stupid, bloated proprietary browsing environment just to open a pdf. You shouldn't have to check to see if I am still paying so I can open a simple document. Ridiculous. Your board members and product strategy owners should have your heads examined. 

This new requirement is ridiculous.  All I want is to open a PDF file that is already stored on my computer.  I don't need or want to use anything in Cloud or any other service.  Adobe is also trying to force me to give them my phone number so they can spam me with unwanted marketing.

I am going to cancel my subscription and look for a different service because this obtrusive, hectoring, demand is not alone obtruding on my privacy, it is denying me the use of the very service I paid for.

If I am not getting the service I paid for, why should I continue to pay a subscription?

I agree this is HORRIBLE....  I do not have the time to keep signing in for every pdf file I receive!!  I am going to cancel my subscription as I have alrready spent hours trying o figure out what was wrong with my computer.... THIS IS HORRIBLE ...ADOBE SHOULD CHANGE THIS ...UNTIL THEN...I am canceling subscription to the DC   

I hate the forced sign-in to use Adobe Acrobat. Does anyone have suggestion for a replacement product to read pdf files?

Same for me, I had the same problem with adobe reader which is free I guess, because we don't pay for it. 
Knowing that I have other Adobe products that I pay for, I totally disagree with your policy, I uninstalled Adobe reader.

Same complaint. I use Photoshop almost daily. Suddenly, this afternoon, it won't launch unless I login to my adobe.com account. I have too many accounts to manage alreaady and I REALLY dislike having to login to use an app we're already paying for. It seems like an unnecessary and intrusive data grab to me.

This is new behaviour and without warning. Also, I had to force quite Adobe from the Mac activity monitor because Adobe would not allow me to exit the Adobe login screen and thus I couldn't even exit Safari.

I removed Adobe with App Cleaner and will absolutely not be comng back. There are better alternatives.