The shortage of CRNA's is very real, and getting worse. First, there are fewer CRNA's than there are CRNA positions in the US. Next, if you combine the total annual output of all the schools
that produce CRNA's in the US, we are graduating fewer new CRNA's each year than there are CRNA's who retire.
The median age of CRNA's is on the rise, and something like 50% (not sure of the exact statistic) are age 45 and above, looking at retirement in the next 15 - 20 years.
So, for the forseeable future, there is a shortage of CRNA's. Upside? You never need worry about finding a job anywhere in the US where you want to work. CRNA salaries are rising, and should continue to do so for the next few years. Downside? In some places, CRNA's (and MDA's) are having to work ever more hours to cover the same number of surgeries.
Is it worth it? To make three or more times what I made as a staff nurse, and not have to put up with staff nurse BS? You damn skippy its worth it!