The scary thing is that Delta has determined when a SkyClub lifetime holder's date of death will be..... A rep at a SkyClub informed me of my expiration date, which is like November 12, 2053 or some date like that.
I get into SkyClubs by my AmEx Delta Reserve card. But, I am also a lifetime member of the United Club (which gives my "expiration" date as 2099, so I guess I'll live a lot longer than you).