As USDC is pegged to the US dollar, it lets traders and investors access the stability of the US dollar within the crypto ecosystem.
The most common reason that people buy USDC is as a trading pair for other cryptocurrencies. It's also commonly used as a safe haven for traders expecting a short-term market downturn.
Furthermore, the stability of USDC also makes it a popular unit of account, while its accessibility makes it a popular method for remittance payments across the globe.