I started running regularly a year ago when I was 68. My reason was not to get fit because I believed that I was fit already barring minor aches and pains. I am a morning person and I wanted to meet other morning people who were fit. In my mind, too many retired people get stuck on the couch and I wanted to make friends with those who were active. But I had a problem motivating myself to get out regularly. A friend suggested I use C25K and it has changed my life. I finished two 5K races last year and am now using the 10K app. I have met a few morning people on my runs but in my community not as many as I would like to see. And now with the COVID-19 pandemic lockdown it's even harder. When people ask me why I run, I tell them to get away from the grim reaper. :)
I like the C25K so much, I adapted it for my other passion: writing. Week 1: Prepare for three minutes, write for ten, three-minute break, write for ten followed by three minutes to save, sync and back up. Here it is: https://www.patreon.com/posts/35628266