Warnock, who was sacked by QPR last month, has taken over at Elland Road on a 15-month contract and insists it will be his last job.
The former Sheffield United boss cited Nottingham Forest owner Nigel Doughty’s death as a contributing factor in his decision.
Speaking to The Mirror, Warnock said: “I read about people dying every week. Take a 53-year-old like Nigel Doughty. I spoke to Nigel on the day that he died and that shook me. I left a voice message and got one back from him.
“Football is a great sport and gives us a great living, but I do think there are more important things, if I’m honest. When something like that happens, you just have to stand back. I don’t want to die on the job.
“I want to go and see my lad play in the academy and take him fishing down in Looe. There are other things to do.”
Outspoken Warnock is still disappointed about being sacked by QPR and remains certain he would have guided them to Premier League safety.
“It was by far the best job I had done in my life in the space of time I had. I believed, and still do, that we’d have been halfway up the table by the end of the season,” he said.
The 63-year-old also insisted taking Leeds back to the top flight would still not convince him to stay in management beyond May 2013.
“I always said I wanted one more big challenge, but I don’t see it going on beyond the prime aim of promotion,” he added. “I would not want to go into the Premier League with Leeds or anyone else, to be honest.
“My wife doesn’t want to see me have a heart attack and have to look after me, without any quality time in between me packing up football and popping my clogs. It’s about finding a happy medium.”
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