Number of cards and their purpose

Hi! Just asking out of curiosity. How many credit cards do you have and why did you get them in the first place (like for what purpose)? Nababasa ko kasi na others have five credit cards or more. I find it a bit too much so I want to expand my understanding regarding this. Hindi ba pedeng isang card nalang yung gamitin for expenses like wants and another card for needs like for paying utilities and grocery para hindi hassle?