I turned 53 in Sept and bought a Fender FA-100 on Amazon this spring, delivered March 8. All that music theory from high school was still up there in my brain, God knows how.
I don't believe that anyone with true drive is too old to do anything.

I couldn't deal with playing songs that were actually 'electric' songs for long. GC had a 30% of sale and I bought a Squier Affinity Strat w/amp kit.

But now I learn songs on the acoustic first, then are are easier to play on the Strat.

All is well. Good times. Now if I could quit my job and play guitar all day....