I get asked so often by old and young people whether or not it is too late for them to become an electrician. The answer is no for most people. Unless you're 70 there's no reason why you can't get into this trade.
I know plenty of electricians that are in their 30's and 40's starting this trade, and I know guys in their 50's and 60's just getting in. There's no perfect age to start. Obviously the younger you are the more experienced you'll be when you're ready to retire, but even at 40 years old you can make a 25-30 year career out of this trade. Shoot at 55 you can do this for 10+ years and prosper.
We only live this one life (that we know of), so don't limit yourself to opportunities because of an entitlement such as "age." If you can move your body, bend over, climb ladders, twist tools, lift things without getting hurt most of the time, and you can see and have full control of your bodily functions....you got this.
Currently the average age of electricians in the US is between 51 and 53 years old depending on who's statistics you use. That's the AVERAGE! That means there are WAY more old guys doing this than young guys, which also means at some point that there will be an extreme shortage of qualified electricians in the not so distant future. We need more people getting into this trade. We need more teachers, and more students - to be able to pass the knowledge of this craft on over the generations.