Ask.com is a search engine. So, let's say a friend of yours went through google. Would you ask them."why didn't you use Yahoo, or Bing?". Ask is another search engine people can use, except one aspect, you can push your question past all the suggested links and "ask people". I think people ask questions here, because it's a lot more fun. I know that's why I ask questions here. And I also use Yahoo and Google.