Why buy a bitcoin ETF instead of bitcoin?

Why would an investor choose to buy a Bitcoin ETF instead of purchasing Bitcoin directly? Is there a significant advantage to owning an ETF that tracks Bitcoin's price movements, rather than owning the actual cryptocurrency? Could the fees and potential tracking errors associated with an ETF outweigh the benefits of direct ownership? Are there regulatory or tax considerations that make an ETF a more attractive option for some investors? And finally, what are the potential risks and limitations of investing in a Bitcoin ETF?