Taking care is a wide concept. Caring for a sick child, an elderly person, animal care, provide assistance, charity, organize a fund-raiser, take care of yourself, your health, your stuff,... The .care extension can be used for all these things making it one of the most flexible extensions under the new gTLDs.
Do you take care of someone or something? Can you give tips on how to best provide assistance in an emergency? Are you organizing a charity? Then .care the ideal extension for you.