How old is too old to watch the disney channel and other cartoons?

My sister loves watching the Disney channel and she is about 18 and when i ask her she says that theres nothing else really good on tv.How old is too old to watch the disney channel and other cartoons?
My Grandmother was watching Strawberry Short Cake the other night because there was nothing on TV.

Despite it seeming ridiculous and/or strage, there's no age limits for watching fictional cartoons and TV Shows. Oh lol, I find Pokemon a bit interesting in the mornings to watch before heading off to school (I'm 17)

EDIT: No it's not really weird. I enjoy watching the Suite Life of Zach and Cody. And the Suite life on Deck.
Never. I'm 18 and still enjoy watching that stuff occasionally, alongside more mature shows like Family Guy. I don't limit my options.How old is too old to watch the disney channel and other cartoons?
I don't know. If someone genuinely likes them, I don't see anything holding them back.
If you she likes it then she likes it. Maybe it reminds her of when she was youngerHow old is too old to watch the disney channel and other cartoons?
I think she has enough confidence in herself not to care what other people think.