Should i upgrade from version 11?

[#1]

A few years ago I purchased Photoshop elements 11 and Premiere elements 11.  At the time, I was employed and didn't spend enough time learning the program.  I have now retired and am getting back into the learning mode for both programs.

Version 11 seems to be very comprehensive, so my question is, should I upgrade to the latest version or just stay with version 11.  How important are the changes?  Has face recognition been improved, etc.?

I would rather stay with version 11, but will consider an upgrade if it will be beneficial to me. Input will be appreciated.

Thanking you in advance,

Jim