Married elderly people, do you still masturbate?

yes I do

I'm in my 60s and enjoy my solo play quite often

You are asking that question why exactly? I ask it because my sense is that as a 20-somthing you think you'll remain that for 40 years.
In your uneducated state, what you [i]should [/i]learn, is that those elder people you seem to dismiss are still very, very virile and active. Sex and attraction are as strong as the day that you're born until the day you pass LePew. As a power of attorney, I assisted my uncle in to assisted living....and he was very aware, alert and cognizant of his faculties, and told me about what was going on within his home of retirees and.....I'd suggest they're enjoying better sex than you are lad.
So fek off on your crude insinuation....they're quite fine.
My sense is that YOU, on the other hand are getting nothing.

[i]There once was an elderly pair,
Who no longer were supple and spare,
So rather than f — ing,
Or 69 s — ing,
They jack-jilled with nary a care. [/i]

What is your definition of elderly ?

Yes, but my wife doesn't.

Constant periodic ejaculation is necessary for good health, as if reduces the chances of getting prostate cancer. https://www.dailymail.co.uk/health/article-9857953/Men-ejaculate-21-times-month-slash-risk-prostate-cancer-THIRD.html

They may have to adjust their masturbatory methods to accommodate for their arthritis though.

I jerk off about 4-6 times a day without issue

If it can breathe it can ejaculate

Yes

This could include me, yes, an average of 15 times per week.

Yeah

Depends on what age you call old 🤷