[QOTW #2] Should you always take supplements/vitamins?

Regarding supplements and vitamins, in your personal opinion, should you keep taking them indefinitely? Are there any benefits to doing so? Why or why not?

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This thread is for personal discussions and experiences. It is NOT medical advice, so don't attempt to give personalized advice.
I personally take Magnesium, Zinc, Omega-3 and Vitamin D without skipping a day. I also take 5g of creatine every day I go to the gym. Apart from the hair regrowth I’ve noticed, I don’t think it does that much to me appearance wise.