People play lotteries because most of the people want big money with low effort.
And most of them dont actually try to understand the math behind the chances.
Doenst hurt If you once in a lifetime try some lotto. Maybe you are the Lucky bastard that Will get rich, but the problem begins when you do this every day/week.
Just do some small math, and check How much ou would get adding those weekly 10 dollars in a low risk investment.