I don’t know what church teaching is on this one, or even if there is any…But I loved thinking about it!
I remember seeing a talk once by Fr. Mike Schmitz about our capacity to love. In this life we grow our capacity to love God and in Heaven it is completely filled. Like, some of us have the ability to love as much as a thimble, and we will be totally full in Heaven. Some people, like say a saint, had the capacity of a swimming pool. He or she will be totally full. Both will experience the fullness of love, but that fullness is rather different. Neither are left in want, but it’s different.
(Here’s the talk)
Then there’s also the idea of why demons can’t repent. They are spiritual beings and are outside of time. That means there’s no chance to change or “repent” since their decisions are eternal. The same will be true of us when we die - our choices are eternally made since we have left the realm of time. Therefore we will not be able to grow our capacity to love more. But, in Heaven, we won’t be in want of more so it won’t really matter all that much. (Everyone is totally filled and feels that lack of want completely, just as the workers in the vineyard all received the same pay at the end of the day)
But Jesus also talked about storing treasure in Heaven and “great is your reward”. I think he is referring to increasing your capacity to love. Things that are done to grow your ability to love God and love others means your capacity always is growing. The larger you can get it, the better so God can pour his love in!
But, again, it’s just a thought.