The lottery doesn't irk me so much. After all, you can play in increments of $.50-$2.00. Like others have noted, that's not much money. You can overspend money on a bar trip(at least the lotto won't cause a DUI), fancy rims, clothes, trips, car, whatever...
What really irks me are payday loan places. I know of one guy who effectivly ended up paying 900+% interest, effective. Them and 'rent to own' places. From some ad inserts from a local paper, I compared 32" LCD HiDef TV's. One from a RTO place, one from Walmart. The payment plan was such that, for the payments, you could buy the TV from walmart for cash in 9 months. How long did they want those payments for? 36 months.
Sheesh...