I am just about to turn 54, and I started playing only a couple of months ago. Sure, it aint easy, but I don’t look at it as ‘I should had started when I was younger’. I am just letting myself really enjoy learning how to play, and every time I learn a new lick or a cool chord progression, the more I enjoy playing.
I like to live by the old quote …
“Growing OLD is just a bad habit that a busy man has no time for.”
… so, just enjoy it...and keep on truckin’!