This is really a flawed view of where we stand as a nation. A substantial number of those 50 million people are more accurately described as unemployable than unemployed. It's not "our" job to get anyone working who isn't in a position to meet basic requirements of any job.
I’ve run a study on this. What you said there is not true.
For forty years we averaged a 9.75% increase in jobs each four years. Each two terms of a president, we increased jobs by 18.75%. I know that looks lopsided, but it worked out that way in the study.
We fell off the boat in 2001, and it continued half-way through Obama’s terms in office.
Instead of an 18.75% increase during the Bush years, jobs increased around 1.0%. During Obama’s first term, it increased at roughly the same rate.
For those four terms in office, we under created jobs significantly.
By now we should have over 190 million jobs.
We have about 145 million jobs in the nation.
We’re not talking about retired folks, people with infirmaries, or people on Welfare, although the people on Welfare should be added to the roughly 50 million we have out of work, who are perfectly able to.
Why did/does the jobs rate increase like this? It does for several reasons. One is that the population base continues to grow. The other is that when jobs grow, they actually support the growth of other jobs.