Why do Tube Amps sound more romantic v SS amps

....why are tube amps according to people who own them say the sound is more say romantic sound vs SS amp ? 

General statements about the sound qualities of individual designs are a little too broad sweeping. You really have to evaluate each component for yourself and find a sound that you prefer. If you want a recommendation for tube gear that sounds romantic or one that sounds dry, there are plenty of examples of each out there. 

I’ve yet to experience the “hair on my arms stand-up” playing this track on the Bryston ss amp?

When you have a system that works, try to suppress the upgradeitis.