It's only a big deal if you make a big deal out of it
My manager at work is 55 years old but I don't see his age. I see someone who: never stops learning, constantly questions everything around him, is committed to continuous improvement and growth and damn good person.
I had a 73 year old lecturer at university (now 78) who used to say that age is simply a proxy.
Yeah sure, a handful of people at a meet up had the opinion that you're going struggle but hey you do know what they say about opinions right? Don't make me type it- it will get blocked Don't let that get you down- my manager sure wouldn't.
You'll be fine @dougc - follow your dreams and try not to over think things.