I'll retire at the age of 51 - maybe 52 (if I decide not to buy back the first 6 months of my employment, which were on probation & I didn't get PERS benefits). Outrageous, I know. And folks are (rightly) unhappy about the PERS system in OR. I'll have put in 30 years, & will end up with a pension close to what I made while working. Which is why I have no problem with giving up SS. My plan, assuming I actually lived to receive it, was to invest anything I got from SS into a mutual fund to go to my three newphews.
I could work longer, but I've always been a very frugal sort (conservative, you might say) & have an IRA & a 403b. PERS should have been set up better to begin with, but just as with folks in private business, my account should have been portable (it's not). Lots of things could've been done better.
You're assuming that Oregon won't revise your retirement plan after you retire and take it away from you after the fact. That's the scenario being discussed elsewhere, and it eventually gets around.