Tassels, fringe, whatever...
I thought "tassels" were those things strippers used in their acts and I thought "fringe" was the edged of a piece of fabric that was starting to come apart (just joking!). I'm not sure what to call it but maybe "streamers" could be used? In any case, whatever you call it, tassels, streamers or fringe sometimes look good while other times it looks utterly ridiculous. For example, I wouldn't wear it in my hair or put it on my truck antenna, but I might use it to keep rocks from flying up or something like that.
I think everyone has pretty much said that it's your ride and you should do whatever you want to do. If you are thinking about impressing someone then that someone better be you! Otherwise, you are doing it for the wrong reasons.
If you have any desire to use or display "fringe" on your bike then go for it. Use it or don't use it. I don't think anyone (here) would disrespect you one way or another. I'm also sure everyone has their own opinion too, or else we would all be riding the exact same bike, have the same tattoo's (or no tattoo's), and even wear the same clothes! Now, how boring would that be?
And if you want to know about the origins of "fringe" I may be wrong but here's what I remember: "Fringe" originally appeared on the coats and pants of mountain men and other people (nearly all men) who trapped animals and took the pelts of beavers, wolves, bears, and so on. Back then a trapper used the fringe from his coat or pant to tie up the animal pelt which made it easier to transport. Of course the "mountain man" is now a bit of a symbol who is mostly associated as being strong, independent and very free to make his own choices in the world - does that sound familiar?! Can you now explain to the next dim-wit who tries to put you down for your choice to use fringe? I suspect that's what's really going on here - some idiot is trying to mess with your head. L8R...