I'll respond to your second point.
I was (am?) a member of the Local Government Pension Scheme. That was a contributory scheme that required both the employee and the employer to make contributions towards the cost of pensions. As an employee, I had no choice and I paid into the fund every...
My job security revealed its extent when a reorganisation of the service I was responsible for resulted in me being made redundant. This was back in 2002. I don't recall God intervening to tell me I had a right to keep my job.
And where did you get the idea that I didn't have to work very hard?
My public sector pension was paid for by my monthly contributions and by the fact that my pay level was lower than what I might have earned in the private sector.
State pensions are paid for out of general taxation.