People looking at what age to start today are looking at the same thing they always have, but with a considerably larger degree of insecurity that may favor taking it sooner rather than later, all other things being equal.
Ha
Yup, you nailed it. That's exactly where I'm at as I look forward to my 61 st birthday. Theoretical calculations of hypothetical SS payouts under current rules are a lot of fun but the trend for public finances doesn't seem to me to be friendly to those that assume that present rules will continue indefinitely into the future.