I think getting older has the same effect on most men !

How about trying a penis vacuum pump ?

I find I'm usually smaller than when I was 40. There is the occasional time when I'm really stimulated and it gets pretty close to the 6 1/2" length, but not often. I console myself with thefact that it still gets nice and ahrd.

My dick started to shrink around 55, now 69, and now there are times I have to hunt for it when I'm taking it out to pee. It gets bigger if I play with it for a while but nothing like the days when I could get a 6 inch plus stiff as a steel rod hard on. I now had ED so bad that it never gets hard at all. If I wake up and have to pee real bad that's the closest I get to hard and I just want to jerk it until it falls off. I guess it comes from the meds I take for all my ills. I did viagra years ago and it didn't even work. I'd give anything to get that stiff six inches back..........

Goes back to normal soon after removal & don't like watching it turn blue....

You are correct and right on the money as all of the other comments were also. I am 62 and very healthy, no meds and no major medical problems. I started having erection problems about 10 years ago. I started using lubrication lotions about then on a regular basis to get me harder and likewise used it on my partners to allow penetration. As soon as whomever stopped playing with my cock it would get soft almost right away. I now use Viagra which works great for me. Viagra has gotten my cock back to the hardness and size that I was in my 30s.

As with other comment, my cock has shrunk. Part of it is ED issues, high blood pressure. Part of it is weight! As my belly got bigger my cock got smaller.
I do not get hard like I used to - and I miss that! But I still shoot a healthy and tasty load which almost compensates.
The important part? My bf loves sucking my 'old white cock' (yeah - he's black) and totally enjoys eating my cum. Then he fucks me royally! (Or he fucks me, sucks me then fucks again. LOL)
Size is great - but as long as I cum, all is good!

Now that I am in my late 70's, it's hard to get hard again like I used to enjoy. I really miss not having a raging hard on like the old days. I would really like to enjoy stroking my hard cock again. Sometimes if I have a lot of time alone. the blue pill and the vacuum pump can do a good job of getting a nice hard-on, but not as big as before. early days about 71/2 inch and HARD, now only about 5 1/2 and not as hard as I would like. I would still like to jerk off more often, but it just does not happen. I like the gay porn now, but I never did in my earlier days. No sex with last 10 years, so my interest in male cocks and ass has grown to replace my past fun times. I would still like to find a male playmate to play cock and ass hole fun, but have not yet found such a playmate.

Yes it has because ed and have high blood pressure. On meds for it. Started at 48 now 60. I use to get to 6 ins hard and 5 ins round. Now if it dose get hard its only 4 1/2 ins long and dose not stay hard for long. So now I am just a pleasure bucket for other guys to use. I bottom and can have a orgasm soft.

I hate to be the bearer of bad news, but the reason your cock seems smaller has nothing to do with age. It's all about weight and condition. From a reputable website: "The base of the penis actually starts well inside the body. . . . the more fat at the base of the penis, the less of said penis becomes visible to the naked eye. The key stat that you need to bear in mind is that roughly speaking . . .for every 30-50lbs of excess weight you will lose an inch of visible penis."
Even though I'm overweight, I keep my lower ab and groin muscles toned (work with a hot trainer) so my cock pushes through the flab. See my pics.

I have! A pump will get me back to my old length & girth, but I start to get worried when it starts turning purple & remove the restricter band at which time I start returning to my current size. My old size would be nice, but better it works instead!

At 71 yo my cock is still the same as it has always been, just under 7 inches, only difference now is that, while it still gets very hard and produces a lot of cum still, it doesn't stand vertical anymore, if I am standing up then it get to horizontal whereas in my earlier years it used to stand straight up, vertical. regardless it still gives me a lot of enjoyment