Because people are slaves to fashion.
But don’t worry about it, the 80s are cool again. Right now 70s retro designs are the thing (Ducati GT, Triumph Bonneville), very soon that’ll move to the 80s. Then it’ll be uncool to look like the 90s.
I still say the 80s sport bikes are some of the best looking sport bikes – the modern “killer bug” look can go take a hike 
In the end, be proud of what you ride, because no one else actually cares what your bike looks like.
