Re: Are cases actually worth it?
I feel strongly that a phone should have a case,  I've had them on all of mine since my first expensive phone in 2012 the Galaxy S3. I worked for Verizon for 4 years,  I'd say over 75% of people used a case,  and the majority of the phone repairs or insurance claims we did were for people with no case and dropped the phone. 
My S7 was the first phone I had that got scratched from debris inside the case,  dumb glass back design.  I now take my phone out of the case to wash it off occasionally.  
Personally I prefer no case,  but I've seen far too many broken phones to risk it myself.