Is arbitrum better than ETH?

Could you please elaborate on the comparison between Arbitrum and Ethereum? I'm curious to know, does Arbitrum offer superior features or performance compared to ETH? Could you provide some specific examples or reasons why one might consider Arbitrum as a better option? Additionally, are there any downsides or limitations of Arbitrum that I should be aware of? I'm interested in understanding the nuances of this comparison to make an informed decision. Thank you for your insights.