"For me" = "I'm spewing self-rationalizing bullshit because I'm too fat to be a competitive runner."  They take this way too far and totally misinterpret it to suit their excuses. Nothing new there. Being slow is fine, as long as you're not interfering with or holding anyone else back. Do your thing, don't get in people's way. But the self-improvement part means you should be getting faster, stronger, better. If there's no progress, wtf are you doing? How are you training, practicing? Oh well, just another symptom of participation trophy society, where everyone's a superstar simply by showing up.