Here's my odd take on it:
A lot of so-called "mature adults" will sit in front of the TV, and they'll specifically watch basic, braindead sitcoms or whatever... the type of "funny" show where they need a laugh track to tell them when it's time to giggle, and the jokes are predictable and every time the laugh track does happen, all the characters just sort of pause awkwardly. Or they'll watch "reality" shows, I dont even need to explain the problem there.
If anything, these "preschool shows" you want to watch are a bit high-brow compared to that drivel.
In other words, go for it.