Yes, it would have been more fun to slide down a steep, muddy slope on a sore knee.
My iMac continually reminds me that I *could* upgrade to El Capitan. I've been studiously avoiding it thus far, since I don't yet have any compelling reason to make me upgrade. I think I'll hold off for a while yet...
I've done the same with those reminders since I didn't know any good reason to switch. And now I have a reason *not* to switch.
Try and skip the upgrade to El Capitan if possible. Unless you want to spend hours finding your files and folders and generally unhiding everything.