Yeah, because pensions are sustainable. They aren't.
Not with the lootocracy running the country, promising increased pension benefits instead of raises, looting the company, riding off into the sunset, a la GM and others... Not to mention the usual flimflams wrt the stock market, and recently the bond market, too...
If what you offer is true wrt pensions, then it's obviously true wrt the alternatives, as well, if not more so. 401K plans are subject to divide and conquer rules, exorbitant managerial fees, and the same stock market manipulations as pensions.
I'll agree that many plans are over-promised, but that's not a function of design, but rather execution.
NYC doormen, fer crissakes, make $40K+ paid for healthcare+ gratuities... and caps on new hires are generally only implemented in another managerial ripoff scenario, multi-tiered wage systems, achieved by beating down unions... Temp workers? if America's financial elite had their way, everybody else would be temporary part time contract labor... and it's not like the MTA can really use temps, anyway, not when it comes to running the system...
And it's not like New Yorkers can't endure a rate increase, either- at $25/wk for an unlimited pass, less for monthly, it's a hugely good deal...