This is why I'm getting fed up with interviews myself. Having to feign interest all the time is getting difficult. Applying for ****ty jobs with no prospect, poor wages, short term contract, nothing stimulating or interesting at all, yet you have to go through the motions and play the act, and fake several things.
A huge part of being successful is playing the game or act, as lets be honest half of the time you have to give answers that are deemed appropriate or what they are looking for. This is why a lot of people who are crap at jobs, can BS their way to a job, because they can act quite well.
If you are asked what interests you about the role, and absolutely nothing does; you are going to have to lie. That is the hardest part for me. How comfortable are you working with a team or similar question; if you don't like working with people and prefer to work on your own, you can't really be honest. A lot of questions you have to fake, which all seems part and parcel of an interview. Sure, people say be yourself, but it is quite different when you get asked questions like that.
I just really hate the whole interview setup, and everything indeed feels fake.