Selling fear works better than selling hope. That is why Christians invented hell, and boy was it a great recruiting tool. Fear of hell was better at getting people to join and follow than the hope of heaven. As an atheist, when Christians question why I don't believe in God, they almost never ask, "Don't you want to go to heaven?" Instead they ask, "Aren't you afraid of burning in hell forever?" Fear > hope to most people, sadly.
It's why the GOP's messaging as been more successful than the Democrat's messaging for decades. They sell fear. Fear of immigrants, socialism, non-Christians, non-Whites, etc. and it works with a lot of people. Basically I heard this many times before the election from family when I asked why they were voting for Trump: "I do not like Trump, but if that son of a bitch, Joe Biden, is elected communism and open borders will follow. Plus, he will kill all the unborn babies, even after they are born. And if his old ass dies, that evil black woman Kamala Harris will take over. She will take our guns!" I never once heard something positive that Trump would do if elected, only the negative things they feared the Democrats would do.