It's not much creative, and not a big contribution to society.
I would rather build USEFUL websites, it might be not as easy, but much more purposeful and fulfilling.
Do you like these domains with just ads on them that you come to from time to time (aka spamsites)?
Plus someone who actually might use the domain name can't get it since it's taken already.
It might look exciting, but look at it from the higher perspective.
Just my two cents
