Ethereum
The original smart-contract platform and still the most battle-tested. Ethereum has the broadest developer ecosystem, the most audited DeFi protocols, and the longest track record of security. Its Proof-of-Stake transition in 2022 reduced energy consumption significantly.
The trade-offs are real and well-documented. During periods of high demand, transaction fees ("gas") can reach tens or even hundreds of dollars. Block times average around 12 seconds. For small community tokens, these costs create friction that is genuinely prohibitive — sending $5 of value becomes nonsensical when the fee is $3.
