Reply to "If you like smoke, why?"

I like smoke because it is an additional moving, dynamic feature of the toy train that is fun.  To me it does not make the loco look more authentic or realistic: I've never seen smoke from a toy train that looked realistic, rolling out in slowly dispersing billows that roil and twist away slowly as do real-world 1:1 clouds of smoke).  It's just fun.  That said, I seldom run with smoke on, because of the odor, which my wife finds very objectionable even in small doses.