I just do.
No, there's a lot more to it than that.
First of all, the word "just" isn't always needed. It doesn't add a lot of meaning. How can things be "just perfect" or "just right"? Aren't they perfect or right? So, it's on my radar screen for that. But I have bigger problems with the word than that.
As far as the word "just" being used to mean "fair", I think we should give up on the concept of life being just or fair if we want to happy. I don't see evidence that anyone is using a giant weighing system to ensure everyone has equal measures of happiness, sadness and everything else. We have to make the best of what we are handed in life. Again, we can strike out the word "just."
Finally, we use the "just" to minimize our accomplishments. We just create beautiful pieces of art, just teach or just write. We just cook, bake, clean, go to work, care for animals, raise children or volunteer. We just pick ourselves up from defeat or upset, and carry on. We just do a lot of things. How about we stop minimizing any of them? How about we give ourselves credit for all that we do and all that we are? We're not "just wonderful." We are wonderful!
I'm not going to formally request that the word "just" be removed from usage. Too much paperwork. But I think it's important to consider the use of the word, especially in the context of minimizing things we do. What we do has value and so do we. It's that simple. And yes, I could have used the word there. But there's no need. It really is simple.