Whatsapp. By FAR. First, it doesn't let me create a userID & password. I cannot create an account on my tablet or computer. I cannot start using it anonymously

Whatsapp. By FAR. First, it doesn't let me create a userID & password. I cannot create an account on my tablet or computer. I cannot start using it anonymously. I cannot have multiple accounts for multiple purposes/groups. It insists on being installed and tied to my phone with my phone number - how ANYbody can talk "blah blah encryption blah blah privacy" when it's tied to my private protected hard-to-change personally-identifiable phone number right at the beginning is beyond me to the level I feel I'm in a twilight zone. Second, it is completely unusable unless I give it full and privileged access to my contact list. WHY? I want to chat with 3 specific people. I want to give you address/userID/token of those 3 specific people. But no - it won't work at all. This is where discussion of "yada yada privacy yada yada encryption" further loses all possible meaning. Third, I cannot easily use it on multiple devices. I have two phones, Galaxy Note 8, and half a dozen laptops and computers and tablets I use daily for various purposes in various locations. I have taken it as granted for the last 30 years that I can check my email/ICQ/AIM/MSN/Hangouts/FB/WHATever on any of those that I choose to. But nooooo... not Whatsapp. Why? Because Privacy & Encryption. L-O-L. It is the most regressive piece of code I've had the privilege to have forced upon my by both techie and non-techie friends and family alike, and it makes me livid every time.