I'm looking at this from my own perspective, the only one I have.
Watching tv is not a priority in our lives. My wife and I work a lot of hours, and keeping up with a series is hard to do. Most of the shows we like are in reruns, because we missed them in first run.
I've spent more time online today than I have in the last month, and that's because I'm at a standstill in other things.
It's hard to follow a serialized show with all the other things going on. My preference is to watch a bottle show with characters I like, so I don't have to try to keep up with a season long arc.
Some series can do it that way, and others can't.
, for example. If you know the premise, you can watch any episode in any order, and it's ok. You don't have to know that last week Adrian had a cold and only got out of bed to save Natalie from a killer to know that in the next episode he would rescue his brother from a poisoned Halloween candy bar.
I prefer to watch episodes of my favorite shows that don't need a setup. I can fill in the blanks myself, and if I was wrong it just makes it that much more fun.