Investors are often normal people like you and me, using dividends and the sale of shares to put food on their families' tables.
What you really mean is those "normal people" would have to sell their third car or maybe rent out their summer home without that dividend, which is just fine by me.
Many pension funds pay pensions by taking a dividend from investments.
Not all dividend paying companies are greedy, and not all dividend investors are wealthy.
Getting a dividend for last year's performance is the opposite of providing liquidity. If they get the cash because it was scheduled, they need to immediately put it back. If they take the cash and run, they failed to act in their own interest, and do not deserve to have their investment protected.
C'est la vie.
Stock prices usually drop after a dividend is payed out because each share now represents a claim on fewer assets.