I completely disagree. If you walked up to Marl, built trust with him, and asked him whether he wanted more meaningful content in his life (for a definition of meaningful which made sense to him) I think he would say yes. So it's not really about Marl's preferences but about the way those preferences are collected and Marl's (sadly mostly justified) lack of trust.
and yet if you became friends with someone that encouraged you in the right way, or found a routine that let you get exercise in a way that didn't suck, you'd probably feel really good about yourself and want to keep doing it.
It's not that its impossible to work with people to raise them to a higher stanardard. It's harder, sure. But not impossible. And the result is usually worth its weight in gold