If you are running a restaurant or barbershop, you have to accept whoever comes through the door. Because you are in the service business.
That’s why service businesses can not scale. It is only “one” of you.
You are the server. They are the customer.
In your personal life, you should be more selective. You need to ask:
Are we serving our purpose mutually?
Healthy relationships can scale and grow if both parties are winning at the same time.