So the question is: you don't care about the numbers and fill them automatically, as they all have the same chances to win, or you tend to pick your preferred ones (birthdays, favourite numbers,...) manually?
If I have to choose numbers, it has to be numbers with significance. The important thing about significant numbers is that it is easier to remember in case you need to do that without going to search for where you have recorded it. Also, you are at home with such numbers that has to do with your dates so that even when you lose out, you don't feel it was unlucky numbers for you. Most people prefer their birthday dates for the numbers that they want to choose from.