I never worry about my age either, 62, nearly 63. Never been a problem, only one pop in an hour, but I can hold out until 40-45 minutes. takes 90 minutes for me to reload again, but that's cool, I'm preferring longer meets these days. Blueys work a treat, too.
Occasionally, I have a laugh about it, like the girl, first time I saw her, who asked me what I like to do. I said, 'I like to fuck sexy little hookers half my age'. She looked at me, smiled, and said, 'Ok, I'll go and get my mum'. We both collapsed laughing and I've been seeing her (not her mum) every little while ever since.
One of my current favourites is just a year or two older than my youngest daughter, the other is the same age as my eldest daughter.
It all works for me. Age is just a number if you're young at heart.