If I'm correct the show has been running for the past 16 or 17 years and that's great and all but...I dunno the show seems a bit stale.
Ash Ketchum is still 10 yet has been on a journey for 16/17 years trying to achieve his dream (Pokémon Master) and it seems like it's like a never ending journey. Plus character development seems to be nonexistent since Ash seems to forget things he's learned in previous regions and Pikachu seems to reset back to lv 5 each new region. The writers still have fresh ideas...kinda but most episodes nowadays seems the same with formulaic plots.
I think I heard that as long as theres a continuous flow of main series Pokémon games they will continue to create an anime adaptation which is a clear signal saying that the show will never end.
An alternative could be to just end Ash's story and bring a whole new cast of characters including a new protagonist which actually sounds better.
I do indeed still enjoy watching the anime very much but all stories have to end eventually and I'm just wondering when Ash's story will end too. =)