On a forum that I visit a man identifies himself as a retired male submissive.
Is the capacity for voluntary erotic submission something like a package of salami or a jar of peanut butter something that has an expiration date?
Is the older submissive person merely destined for the trash bin?

i certainly hope not.
Yes, male subs get too old and must be retired. No woman wants an old man when she can have a young stud. Dommes, however, never get too old.
I am that retired sub.
As you move from one phase of life to another, your relationships change. It is a very interesting thing that Mrs. Mule and I have changed our relationship with each other since the day we met well over 40 years ago. And we now love each other even more than then.
Relationships are based on trust and communications, everything else, including kink, is ephemerial.
Over the past 40 years, I trust Mrs. Mule more and we communciate better. Coincidence?
Submissive men do not ever get too old. Bitchy Jones has a nice take on this in her blog.
Older submissive males have valuable experience, are not as focused on their own fantasies, and are likely to understand that BDSM porn is not representative of real life. They tend to be better communicators, especially if they have been in committed BDSM relationships before.
Stereotypes and blanket statements can go either way. Some young guys are pretty good, and some older ones are assholes. But generally I think older submissive males are a great deal for a Domiant woman of any age.
How does one become too old to be submissive? If a man is submissive he is submissive until the day he dies.
Now if a man is only playing at being submissive he may become too old to play the game any longer.
Being submissive to the woman I love is not a game for me, it’s what I am. It’s not just a sexual thing and it need not be sexual at all. It’s more spiritual than anything else and has been a spiritual thing since I had my first crush on my kindergarden teacher.
The total bliss of obeying the woman I love and submitting to her only gets stronger the older I become. Her loving and compassionate authority-discipline is what I live for.
How could I discard that because of my age? I couldn’t do that anymore than I could discard my absolute love for her.