Why a lot of people entering into fake giveaways?

Everyday at SG i see a lot of people entering FAKE giveaways. Most people are checking giveaway'ers profiles and write into comments that this or another giveaways is fake, but the fact is the people still entering into these giveaways which reach more than 500 people into 1 FAKE giveaway.Do people enter into giveawys wich no checking profile or just think it is bullshit that people create a giveaway and don't have game?Another intresting fact that people either want to lose points so badly or want to get "Enter Giveaways" ratio or either some people are stupid(no offense but it's true). What are your opinions about it?