I prefer to calculate with numbers, and don't pay much attention to superstitions around them. I don't gamble, nor much pay attention to conversations about gambling, so I pretty much ignore any mention of lucky numbers when such topics arise (aside from knowing that some people have lucky numbers). If you refer being isolated from a particular aspect of life living under a rock, so be it. Though I will point out that I like wide open space. I'm more of an astronomer than a geologist!

I have never heard of 7 being lucky until this thread.

I think you overestimate how cultural diverse western countries are when it comes to small things like this.