My 2 cents: 1) It's hard. Very hard. Unlike most other subjects you can't fluff through it. It works or it doesn't. 2) Every programming class is a ton o

My 2 cents: 1) It's hard. Very hard. Unlike most other subjects you can't fluff through it. It works or it doesn't. 2) Every programming class is a ton of work. Even if you're great at the subject, it's generally your most time consuming course. 3) Because of #2, if you don't know from Day 1 that this is your major, it takes forever to get through the coursework. 4) More than most majors it's very hard to take even the intro classes if you haven't done it before. Perhaps because of all this, most CS majors I know are people who just couldn't imagine majoring in anything else.