"It's useless for you to give the probability against it happening when there is a chance."
LOL. Really? If I knew you, and if it was legal, I'd give you 749 to 1 against you for any Pick 3 straight number anyday. Hell, I'd even give you 799 to 1. There's always a chance, you know? (That's right, I don't care what method you use. I'd still lay you better than the states do if it was legal, which I'm fairly certain it is NOT.)
Of course it matter WHAT the probability is. Obviously most people playing the lottery know the odds against them, but many don't seem to understand the implications of the odds, or even the odds themselves. If you believe that there is any methodology you can utilize to improve your odds, then you DON'T understand the odds, you just understand that there is a chance.
Since you apparently only care that there is a chance, would you take that gamble? Would you play the Pick 3 every day for 20 years knowing that the odds against you being ahead or something ridiculous like just a couple percent? And that if you are ahead, it's likely by a very small amount?
I understand WHY people play jackpot games. That's different. They aren't good bets, but they are the only bets that pay out so much for so little risk. The Pick 3, however, offers virtually no chance of striking it rich. The only chance you'll have of that is if you wager huge, and it's a terrible, terrible, terrible bet.