You’ll end up real disappointed if you think people would do for you what you’d do for them
In healthy relationships you do things for each other but everyone has a different idea on what caring for a loved one involves. You may be the kind of person to bring someone soup when they’re sick then get disappointed when they don’t surprise you with soup the next time you get sick. But soup is how your caring instincts manifest, maybe theirs are different. Maybe they don’t think to do things when you’re sick but are great at knowing when you’re stressed out and need to get out of the house.
Disappointment comes in expecting the exact same expressions of caring that you give to them instead of looking for the unique ways they express it. Someone who cares about you will give back as much as they get, they’ll just do it in their own unique way. But there are people who will take from you without giving back, those are the people to cut out of your life.