If you need to use the computer away from home, you'd go with a laptop. For example, I use mine at school. Sure, you can use one of the computers there, but I prefer to use my own computer that has everything configured the way I want it, with all the programs I need on it.
At home, I almost never use it. Buying a laptop as a desktop replacement that you're only going to be using at home is just silly. Even if you spend $2,500, a cheap custom built desktop system will outperform it. Maybe if you live in an *extremely* cramped apartment, where every cubic inch of space counts... But there are some pretty decent micro-ATX boards and cases out there.
At home, I almost never use it. Buying a laptop as a desktop replacement that you're only going to be using at home is just silly. Even if you spend $2,500, a cheap custom built desktop system will outperform it. Maybe if you live in an *extremely* cramped apartment, where every cubic inch of space counts... But there are some pretty decent micro-ATX boards and cases out there.