I notice patterns more than numbers themselves. If I see 666 somewhere I usually just think “fun coincidence” and move on.
The roulette one is interesting because people are really good at attaching meaning to patterns, especially in games of chance. Poker and roulette teach that lesson pretty fast. Sometimes a number feels special simply because our brain remembers it more.
That said, I get why people enjoy those little symbolic moments. As long as it stays fun and doesn’t start making decisions for you, I think it adds a bit of color to the game.