market demand:software eng, maths,or physics?

I need to decide what to study when I apply for college.
I'm interested in all three, equally, as hard it is to believe.

What should I do? Should I take a year off to work and think about which of the three I really want to learn and work after graduating?
Or go for the one which will be highest in demand in 4 years (major)? Which will be?

Please help me, counsellor /pro.

>>10
True for most, but I wouldn't move to the business shit even if I got paid twice as much right now. All these conferences, all these buzzwords, all this moving your hands as you speak like you were trying to kill flies, all this stupid management shit, I'm not doing it. I'm a happy geek. If I wanted to get the most money, then I'd be a stinking lawyer trying to rip old ladies and children off; if I went for geek it's for a reason.

P.S.: I've wanted this job since I was 12. Began learning stuff for myself, years before I went through university. Every time I had to choose what to study next (high school, bachelor's degree, uni, etc.) I took 30 seconds... the time it takes me to find where's what I want and to be sure I don't check anything else by accident.