Why to people respond to answers with sentences that have nothing to do with the answer? It's not like they get feedback or anything.?

because 2 pts is 2 pts........and some people have nothing to say when they read some of the ridiculous nonsense you  post,    like how you think Michelle is a man,  because you looked as some photoshopped pictures of her hands. 

Best not to respond to utter nonsense like that. 

Some people do it to Point Game

They get 2points for any answer is why, and they do get feedback if people thumb up or thumb down their answer. They are counting on people NOT to report non answers for point gaming and cheating. There is NO Verizon staff monitoring or moderating. YA e cept the users. They know that.

They do it for points or because they think they're being amusing. Those types of posts should be reported. If users had enough violations they'd eventually quit posting nonsense. We are all the moderators of this site, so the posts that are here are an example of what the users are willing to allow.

because they think you won't report non-answers

There are many interpretation of what a person is saying or asking.