Honestly, it depends on to whom it is you are speaking. We had a family doctor (died suddenly, ten years after retiring, from a heart attack), a gem of a human being, who told my wife that our community, which is a retirement destination on the west coast of Canada, had some of the most expensive sewage in the world. His inference was that it was because people were plying themselves liberally with sometimes exotic and expensive supplements which their bodies either couldn't use or declined to use, and it went into their toilets and down the drains.
I have read that our aging bodies don't absorb nutrients as well as they did years earlier. That may be true, in which case some modest supplementation couldn't hurt, provided the money isn't wasted on expensive urine. But I feel that eating properly, meaning not too much, and eating nutritionally (very little package goods of any kind, whether fancy rice pilafs with flavouring packets included, or tins with their plastic linings and things added to the 'food' to make you want to ingest even more of it) should keep even feeble people from harm. Lots of vegetables, some fruit (careful, fructose is hard on the body!), especially blackberries and blueberries, and eating fresh flesh for protein and the full range of amino acids and such is the way to go.
However, that's just me. So far, so good. I do run a bit shy on potassium, apparently, so I add some of that shakeable powder (potassium salt available at your grocers) into my coffee each afternoon (I like my coffee less bitter, and salt helps). I have to take a statin, to my regret and annoyance, and the science says to supplement with coenzyme Q10, or CoQ10. I place one under-the-tongue B12 there about once a week...just 'cuz. But I take no other vitamins or supplements...oh, forgot the magnesium malate, 200 mg, that I take twice a week to help my heart stay in rhythm. But that's it. No daily, nothing prescribed, no anemia...nothing like that.

[Edit. added] Okay, I'm undoing my own position on this a bit, but I do also take D3. Accordingly to a lot of personal reasearch, the human body that lives above the 30th parallel gets about half of what it needs, and the further north you live, the worse it gets. And that starts in September for us up north because the sun gets low, the days shorter, and we're not out in shorts or lying by the pool. So, every second or third day I give myself and my wife two 2500 IU tablets. D3 is critical for body immune and transport functions. Most of us get much less than we could use if our bodies could speak...which they will in an unpleasant way if you short yourself.

Finally, your primary care provider is the person to discuss this with. They know you best professionally and scientifically.