I have always sticked with Sony every generation as my main platform, mainly because of the exclusives. I currently own a PS4 Pro, Nintendo Switch, PSVR and Xbox One X. And I have owned a PS1, PS2, PS3, PS4 and GBASP.

If we aren't including PC then yea. For me, I prefer to play third party games on PC and play exclusives on the switch. Once in a while, I do turn on my ps4 to play Sony exclusives and the upcoming FFVIIR.

The word "Switch" implies a switch to Nintendo.  And that is exactly what I've done. 

Although it would be more accurate to say it was a gradual transition.  PS1 and PS2 were definitely my main consoles easily.  I only owned a PS1, and I owned a PS2 for years before getting a used Gamecube after the Wii already launched.  In Generation 7, I liked both the PS3 and the Wii.  In Generation 8, I was disappointed with both the Wii U and the PS4.  Now I really love the Switch.  

At this point I am wondering if I will even own a PS5, or if I do it will be several years from now.  I really love the Switch, while I am really disappointed with the PS4.  Sony would have to make some major changes for me to like PS5 on the level I love the Switch, and I have no indication that they are going to do that yet.