We like things to be "fair" and to have mutually beneficial relationships in our work life. On top of that we all struggle with being vulnerable so your idea of a friendship built on top of mutual reliance seems really difficult to pull off.
Far more likely is you needing to accept that you will be doing most of the maintenance work around any of your adult friendships, and they might not have any "benefit" outside of being one of the few balms to existential dread.
Far more likely is you needing to accept that you will be doing most of the maintenance work around any of your adult friendships, and they might not have any "benefit" outside of being one of the few balms to existential dread.