I'm gonna take a stab at this.

The odds of being dealt AA or KK is ~1/200. Therefore, you should be dealt either one of those hands every 100th hand or so.

At 50NL 10 man, which is what I assume you're talking about, you pay $.75 every time around the table. Assuming you start as BB, avoiding the extra bring-in bet, it works out to $7.50 in blinds for a hundred hands of poker.

The question then becomes, can you expect to make >$7.50 every time you get AA/KK at 50NL? I think the answer, over the long term is, "no friggin' way."