Am I being immature in my career?

Everyone my age are in management. I am 31 and working alongside people in their 20s. I had the option to be in management permanently but I turned it down because I had a terrible experience being a supervisor. It was salary based and I was in charge of 8 different locations. I had to quit due to stress and my marriage being affected. I keep being told not all companies are going to overwork me like that, but I am hesistant to accept any leadership role now. At the same time I keep imagining myself as a 70 year old man in entry level work and that kinda bothers me a little bit.
Am I being immature in my career?
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