Single-speed... I just don't get it

I love riding fixed and appreciate there are various applications: Velodrome, training, fun, fashion, but what's the point in single-speed? If you have a freewheel, why not ride geared - it makes the same shitty freewheel noise.

Apologies if i offend and i hope one of the many single-speed commuters i see each day can enlighten me.

Peace x

Because people that ride single speed like it.