It's not really that difficult. Sure, it might take some time getting used to, but you definitely have more control and can get accustomed to work at your own pace. The time you spend commuting to work can easily be substituted by you enforcing some discipline on yourself to get into the working spirit, but unlike an office job, working from home gets progressively easier.

Not true. Is easier to concentrate al home than around a noisy co-worker, believe me.

It takes control, I get up the same time, shower and dress as if going to the office.

That depends on the job. My job is drawing, and I can't really comfortably take my drawing tablet with me everywhere (though I admit I know people who manage to use it in any position). I also didn't buy an used Cintiq to leave it at home and work with a regular tablet :P But I guess if I had the money to buy a good Surface computer, I'd be able to work from anywhere too. But no public places because over here it's dangerous to carry expensive work tools around.

Oh yeah, my own coffee, that's just HEAVEN, even if I'm at a clients' I always take a flask!