I'll be 53 in Sept and still get rock hard morning wood. It goes away faster than it once did - I don't have to push it down anymore to piss for example. One question for older guys here. Does it take you longer to get hard or take more "excitement" to get hard than when you were younger? I use to get aroused so much easier but now it takes longer. Once there, it's like a rock and last much longer than any partner. Even a younger partner who goes soft immediately after cumming I stay hard for maybe 15 to sometimes 20 minutes AFTER I cum.
I'm 52 and yes, it takes "more" to get me excited now, and it takes longer. However, like you, once there, it all still works fine. I think this is pretty much normal as we age. I know some guys who are 80 who still are able to get it to work like they did at 20; I know some guys my age who can't get it up at all. Me, it still works, just more slowly. Example: when I was 25, ANY porn of any kind would get me rock-hard and ready in seconds. Now, I can watch all kinds of porn and not be aroused. If I see something hot, though (and everybody has a different definition of "hot"), it can still work just like the old days.