Most people fill their leisure time with meaningless activities. Do you agree?

Firstly, I don't agree with that statement. Anyone is free to spend his/her leisure time doing whatever he/she wants. That's why it's called leisure time. People have to enjoy themselves and relax after a hard day of work day. And who I am to tell him what he should do in his free time?
I've read an essay saying that technological development has made people to choose bad activities that don't contribute to their development,  instead of activities that improve them. For instance, one activity is the Internet. It's clear that social networks have become the most popular free-time activity, but as long a person doesn't spend all the time online, what's the problem?
They said that people who go to the park, practice sports and do volunteer work are making good use of their time. It's certainly good for their health or good for the world, but the point is: the leisure time is not supposed to be meaningful to you, it has to be meaningful to the person doing it.

[<em>Good work and a good argument, though I do try to get in at least 7 hours of physical ativity in a week.  I say this because the U.S. is too fat.]</em>