No. I know some people who are completely afraid of it, but I don't see what the big deal is. It's just a number. Like 666. Simply a number in my book. If people want to be superstitious, then that's their problem, not mines.
No. I don't believe in any psychological values 给 to numbers, because they're just numbers. 13, 7, 666, 8, 3...I don't believe in any of them other than the fact that I use them for mathematics and counting.
13's alright with me, nothing bad ever happens to me on the dreaded "Friday the 13th" 或者 anything, 或者 at least nothing worse than what I get normally (in fact, I think that's the 日 I get my best test grades XD). To be honest, ever since I was little my lucky number was 12. Dunno why, but it was. Which is why I HIGHLY doubt the end of the world to come on my luckiest 日 ever and I will proceed to laugh at everyone who thought the world would end when we reach the 年 of the Snake alive.
Anyway, that's a no for me. It's just some silly superstition. I'm not superstitious in that way, with the breaking mirrors and black 猫 with bad luck, but I am fairly superstitious about magic and ghosts...
13 is just missunderstould. All he wants is to fit in, but NO! Someone just had to ruin his dreams 由 spreading a rumor that he's bad luck!!
Im sorry, this is just a really touchy topic for me, 13 is a very good friend of mine and doesn't like it when people say he's bad luck. So whenever someone says he's bad luck he intentionally makes bad things happen to them.