Yep, boredom is why I quit playing poker in casinos. I'm usually at a casino with friends to have a good time, but winning poker requires folding the large majority of hands [1], and it's just not fun. Craps with friends on the other hand, but I digress...
Also, very different than small poker games with friends where the point is hanging out and 'gambling' a bit.
[1] Tournament style is different from an open ended game.
This is why David Sirlin made a poker variant which is fun to play at the dining room table
https://www.sirlin.net/articles/designing-pandante
And he did so by making more hands good so you don't want to fold all the time
Part of what poker teaches is patience.