How hard would it be for all ticket issue type of companies to have a little loop in their number generating program that wouldn't allow 3 or more 6's in a row. Probably one of those things that a lot people don't care about. I know in South Carolina, many people were upset when their new auto tags were issue. The state re-issued new tags free of charge to anyone that asked.
Some people are supersticious - the others just want to be safe!