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Social Security isn't evil but it is certainly 'bad', in principle that it forces me to pay for others' retirement and my own. Other side effects include debt, redistribution of wealth, corruption, and laziness.
Solar panels and wind turbines don't tend to live very long, so increasing the timeline won't really help. Plus, if it was a small timeline, nuclear would look more expensive as it would include all the initial costs (nuclear power the first year is much more expensive than nuclear power subsequent years, until decomissioning).