When it comes to Cryptocurrencies, the main one would be Ethereum! Like it or not, everything today is built within this Blockchain: Tokens, NFTs', DeFi... Are there any competitors for this network? Of course! Polkadot and Cardano are the main ones, but they are still far from delivering what ETH delivers.
Instead of being "guessed" and literally Betting, it's more interesting to focus on what is reality and today, Ethereum is! Does that mean Polkadot and Cardano can't be in 2 or 5 years? We are not saying that, because we know that this potential also exists.
Ethereum's differential is that it is a Blockchain, with that, people and companies will be able to build decentralized applications within this network! This makes Ethereum have an extremely high market cap! Always ranked second on CoinMarketCap.
When buying ETH, you indirectly expose yourself to Tokens, DeFi, NFT's and Metaverso. Why buy The Sandbox and take hundreds of additional risks if you can buy Ethereum and it will benefit from the appreciation of this Token?