Is karaoke fun?

It depends.  Some people like karaoke, and some don't.  You might enjoy karaoke if, for example, you have an outgoing personality, like to sing or perform publicly, or enjoy bonding with others over music.  Others might find karaoke to be loud or may not like listening to amateur performers, who at times can also be intoxicated if performing at a karaoke bar.  In addition, when at a public location that offers karaoke, the songs are selected by the performer, so you cannot predict whether you will enjoy the music selection (unless you may happen to rent a private room where you can select all of the songs yourself, which is offered at certain karaoke institutions).  Interestingly, whether or not you personally would consider yourself to have a good voice does not always determine how much you will enjoy karaoke.