Quote:
Originally Posted by Palikari
No. It's not "just a rule".
OP asked why that rule makes sense. He thinks it's about fairness. As I explained in my first reply that's not the most important reason.
The rule makes sense, because these mini-raises dont make sense in poker. They give unbeatable odds and basically turn poker into bingo.
I agree with you that raising so small doesn't make sense from a game strategy point of view, but that doesn't explain why the rule exists. There are many games where the rules allow you to do stupid things from a strategic point of view, but you still can do them. Rules exist because otherwise the game would fall apart, or because certain rules make the game easier to understand or make it more streamlined.
In this case I think why you are not allowed to make raises of less than the original bet is to prevent people from making small reraises which would never close the betting.
For example, player A makes a 10BB bet. Player B raises it to 11BB. Player C raises it to 12BB. Player A now calls, but player B can reopen the betting by reraising to 13BB and player C can make it 14BB, etc. I'm not sure, but I think it is possible to collude in this way.
Granted, this still is possible in no-limit with the current rules, but at players have to invest a bit more of their stack to do it. In limit the betting is capped after a fixed number of raises to prevent this from happening.