Could anyone clarify this for me?  Why does testnet3 have halvings?  Given that the coins hold no value, there seems to be no rationale for imposing a supply cap.  It might be better to maintain it at 50 tBTC per block indefinitely, ensuring everyone always has an equal opportunity to earn a sufficient amount.  With halvings, it's only a matter of time before the network resets due to the absence of block rewards.


That's correct.  Spamming on the mainnet is discouraged because... you're paying actual money.  In the testnet, you could execute a spam attack at no expense.