Can anyone imagine their father, Guru Gobind Singh jee tieing up his beard ? No, so how can his kids do it? We are sons of a King, a Singh, we are Lions.
I think the fad today is because of how society is. It might also be because due to work conditions which is understandable (ie.doctor). But a khula prakaash of dhaara is the way to go if you have nothing else stopping you except public opinion. If you have to do it because of work conditions i guess thats ok.
Btw, has anyone seen Bhai Roop Singh jee's (UK) dhaara.... WOWWW !!! <_<