Why btc instead of ETF spot?

Could you explain in simple words to a person who is starting to enter the BTC world why it would be more convenient to buy BTC directly today rather than waiting for one of the spot ETFs when they are approved? Because, as a layman, I don't understand what the advantages of buying btc can be. I only see the pros of the etf (huge simplicity compared to the direct purchase of btc, lower purchase and maintenance costs, lower spread, simplicity of custody and zero risk of loss) in the face of a passive replication that should guarantee excellent returns .