There are so many questions like, “what type of website should I start?” or “what kind of website will make me the most money?” Logically, the best websites to start would be financial, medical, politics, celebs (ect.) This is only because people want to know about that kind of stuff. It’s the important stuff that people look at. The search engines know this.  However, since people know that these sites get the most views they start making more and more of these sites. Only about 1 in 20 of those sites get good revenue, and generate good quality information.  The rest of them are mostly scams.  

My suggestion to you is not to pay attention to what other people want, but what you want. The best niche is when you do what you love, and have a great passion for.  If you love what your doing there is also a great chance that you know some good information on the subject. Everybody wins that way. 

The worst possible thing you can do is start a website that you think will make you a lot of money, but you know nothing on the subject.  I guarantee it that you won’t make much money at all if you do that.  First of all; you probably won’t enjoy it when you have to constantly update your site, and you have nothing to talk about.  Second, your not giving the good quality information that your visitors demand. 

 Save yourself, and everybody else a pain in the ass, and do something you enjoy.