BFF-less

I have only had 1 "best" friend in my adult life. A friend to whom I could truly talk to about anything and everything. No holds barred. No topic out of bounds. No judgements.
That friendship has dissolved at this point.
No hard feelings. Just fundamental life changes that preclude maintaining a friendship on that level.
These days I have lots of casual acquaintances. People with whom I have some small aspect of daily life in common. In the absence of these commonalities we most likely wouldn't  maintain a friendship.Not because they aren't lovely people. It's just that there are more differences in our lives than similarities.
I have my grown daughters. They are incredible women. I couldn't love them more. But there are boundaries to what we can share with each other. And rightly so, I think.
My husband is also not my best friend. That probably seems shameful in the face of so many sappy greeting cards, love songs and Pinterest postings. He is a good man and I do love him. But I cannot talk to him about absolutely everything. It would be wonderful if we ever achieved that level of friendship in our marriage, but for now it just isn't so.
So that leaves me BFF-less.
Should middle aged women have friends with whom they can share absolutely everything?
Do we need those kinds of friendships outside of family?
If missing something in your life means that you need it, then I do.
But where to begin? Hmmm......