It depends for me. Sure, it sucks when a game comes out in a buggy and not finished state, and many times reviews reflect that. So I just don't buy it. But I can still enjoy it later, if it gets fixed over time. In that case, I also paid less money, because at that time it's usually available on some sale for a lot less than the initial release price. Reviews made at that time should reflect that they fixed the initial problems.