Mostly because there are so many people out there who want something for nothing. From Nick Giambruno at internationalman.com:

Rapidly rising food, housing, medical, and tuition prices are squeezing Americans, and many do not understand the real cause of their falling living standards.
That confusion opens the door for opportunistic politicians who promise supposed freebies to ease the pain of inflation. Many, unfortunately, succumb to this siren’s call.
Perverse as it is, the policies offered to people suffering from inflation create even more inflation. In other words, inflation has a way of perpetuating itself, much like a heroin addiction.
We are already seeing cockamamie schemes in the US, like “inflation relief checks,” which attempt to solve the problems of inflation by creating more inflation.
The political-inflation cycle follows a clear pattern:
Step #1: In a fiat currency system, the government will inevitably print an ever-increasing amount of currency to finance itself.
Step #2: This makes prices and living costs rise faster than wages.
Step #3: The average person feels the pain but doesn’t understand what’s happening.
Step #4: More people support politicians who promise freebies to relieve the pain inflation causes.