1. transaction speed:
The bitcoin network can only handle 7 transactions a sector. That means only 7 people global can buy or sell using bitcoin every second. For comparison visa handles 24,000 transactions a second. Low transaction speed limits bitcoin’s effectiveness as a currency. It also aches those who see bitcoin as a store of value. Exchanges go down and funds are stuck waiting hours (or even days) when too many people buy or sell bitcoin.
2. Lack of privacy Are you relaxed with the whole world knowing the value of your bank account? What about the whole world knowing where you send funds and who you receive them from? Bitcoin wallets are tied to address hashes (random sequences of letters). Once the owner of a wallet is identified all of their previous transactions and all of their future transactions are visible to anyone who downloads bitcoin’s ledger. This history can never be removed or changed.
3. Programmability Bitcoin was designed as a digital currency. The technology allows only basic programming. This avoids bitcoin from being used in more complicated situations like for smart automatically executing contracts. Think of it like a calculator compared to a computer. Programmable blockchains (Ethereum being the most widely known example) have the potential to enormously disturb a wide array of sectors.
Comment Bellow if you agree all above