Decimalization rendered many Business Models obsolete overnight... And spawned a bloodbath in Third Market dealer stocks... But now 5 years on... everyone has downsized and adapted... and is profitable again. Same thing will happen in any market that goes from sizeable increments... to decimals. The public? The average customer probably should not be ** trading ** options anyway... It's a pure hedge or pure gamble in a 99% efficient computer-driven market.