In the case of the "Community Node" it's the "keeping up with the Joneses" motivation. The small fish want to be like sharks too. And it makes sense due to unbalanced inflation (brilliant idea borrowed from Garza of course) because masternodes get 50% of all rewards so if you're holding a small bag you'll get screwed by the big bagholders. The "Community Node" allows you to be the the screwer rather than the screwee. Also the counterparty risk is something paycoiners are very fond of, giving their coins to someone else to lock them up is in their DNA.