While we certainly want questions marked solved so that people seeking answers can find them faster and easier at the same time we don't always get the best answer as the best answer. For example. A while ago someone inadvertently formated their whole drive and wanted advice on how t get data back. The best answer marked was that once the drive is reformatted your data is gone. NOT TRUE. The OP has done a disservice to future readers who see that and think it's correct. Perhaps a peer review system where it requires two or three readers to mark a response best answer and solved. don't even need the OP to be one of them.