Is it normal to not care for any sort connection?

I have been a loner for most of my life. As I got older I become more confident. Also been called "Charismatic". However I only talk or influence people mostly strangers in public place when I feel it is necessary. I am confident enough to sing and dance in public place(walmart). I currently have no friends and only talk when I need too. Many people know me but not personally because I stay distanced. A few times when going to the city, I actually ran into strangers who remembered me and rarely I met one who I share common grounds with.