DJs who like to be DJs, and end up doing this for more than 10 years DO NOT Retire until they physically can't do the job any more, or health issues force an early retirement.
My Dad is Cap's Age, and still DJs. 74 this year. Hell...He is loading up his Convertible Corvette with his equipment and taking it to the legion or Elks Lodge to load in. Last week he did 3 gigs. This week he only had 1, but next week back to 3 gigs. He says he won't stop deejaying.
Now, he isn't doing weddings any more or so he says...He did do one for a friend's son 2 years ago, and did a neighbor's wedding 3 years ago..
Now, for me...I won't run away from deejaying either. The money is better than any job I have ever had, and I love deejaying, and making people dance. I also feel it's the only thing I have complete control over that I can make money with. Any job, I'm working for someone else making them more money than I made myself, and the monetary reward, or emotional reward is no where close to what I receive in return from my DJ gigs.