Ethereum average block time is 12s (with low variance) and high chance of getting tx included in the next block. Still too long for a point-of-sale payment, but its feasible. Then there's fees that are too high on L1 (several dollars minimum).
L2s fix this (~immediate settlement, cents in fees), but it's another layer and another account for users to manage (which is annoying).
L2s fix this (~immediate settlement, cents in fees), but it's another layer and another account for users to manage (which is annoying).