1. They are told that they have a right to be comfortable, a natural extension of a self esteem movement that says being validated emotionally is of the utmost importance. If you think you have the right to physically attack people who challenge your narrative, you think it is utterly immoral to be expected to work at a physically demanding job for 60 hours to have crappy housing and lousy food.
2. They are told that housing, food, healthcare are a right. If it is a right, there's no shame in not working or working only part time to collect federal benefits.
3. Liberals benefit when people depend on the state for critical needs. They thus don't eliminate the welfare cliff, where earning over X amount (part time at decent wages or minimum wage full time) costs you utilities, subsidized childcare, etc. You start to move up the ladder earning 10% more, you lose thousands in benefits, so you don't move up. It keeps people trapped in dependence, and the state knows that people who depend on it for necessities will vote for more state power and resources.