Is it just HD riders, or many riders?
Personally it does not float my boat, a nice grumble yet, but being stupidly loud is not for me.
A friend a block back as some or other stupidly fast KTM Supermotord, and that thing is loud from my house when he starts it up.
There are three other HD's near me that pass my house and their bikes do not make a noise, sound yes, not noise. Then there is a KLR that comes past that is stupidly loud again.