What are you supposed to do with a Pokemon game once it's completed? Train every catchable mon to level 100?
Making a living dex.
Shiny hunt.
IV breeding.
Making a shiny living dex.
Battle, collect or breed. Those can last you anywhere from 4 hours to 400 depending on how much you put in and what your goals are
>>27427751
Play with your friends of course.
>>27427840
>not making a shiny living dex with perfect IVs all at level 100