When we answer our own questions, I agree that giving other people time to answer before a user can self-accept increases the quality of the accepted answers. However, I think that a user should be set it so that they self accept automatically if no-one answers within two days. This should of course only be used when you are posting the answer to a question you already know the solution to.
- Allow accepting my own answer without waiting 48 hours in light of accept rate - Looks at this issue from the wrong perspective.
- Why must I wait 2 days before accepting my own answer - this post is in favour of immediate acceptance, while my idea still involves a delay.