It's healthy, wise, and loving to be considerate and responsive to the feelings and needs of others. That's different from caretaking. Caretaking is a self-defeating and, certainly, a relationship defeating behavior - a behavior that backfires and can cause us to feel resentful and victimized - because ultimately, what we feel, want, and need will come to the surface.
Some people seem to invite emotional caretaking. We can learn to refuse the invitation. We can be concerned; we can be loving, when possible; but we can place value on our own needs and feelings too. Part of recovery means learning to pay attention to, and place importance on, what we feel, want, and need, because we begin to see that there are clear, predictable, and usually undesirable consequences when we don't.