It's never too late!
mtb chick you will love clipless and hubby is right they will help you with climbing.
One thing to do is practice, put them on and go out on the grass, hold onto a tree or fence and practice clipping in and out then let 'er rip........pedal and get the feel stay on the grass the fall (if) won't hurt so much. Practice, practice, practice........you won't need that much it's really easy once you get the hang of remembering to clip out at a stop, LOL.
I actually did all my practicing in doors as I didn't have grass to go out on, it didn't take long. You'll love it and never look back.
Enjoy! Keep challenging yourself.
Kate
Life is like a 10 speed bike, we all have gears we never use.
Charles Schultz
"The bicycle is just as good company as most husbands and, when it gets old and shabby, a woman can dispose of it and get a new one without shocking the entire community." — Ann Strong, Minneapolis Tribune, 1895