when you're the office go-to guy for all space and physics related matters * when you're the one who tells your friends what's the latest in spaceflight news (whether they care or not) * when you find gravity very uncomfortable, and find yourself in need to take a break from it from time to time * when your definition of someone being "rich" encompasses having enough money to launch stuff into orbit * when you don't think 200k for a space-tourism ticket is "too expensive" * when you're already saving up for the above :lol: when you spend a socially-unacceptable amount of time reading through full mission transcripts in spacelog.org * * = guilty